400471512 has 96 divisors (see below), whose sum is σ = 1226001600. Its totient is φ = 108392256.

The previous prime is 400471483. The next prime is 400471517. The reversal of 400471512 is 215174004.

It is a super-2 number, since 2×400471512² = 320754863847132288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400471517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13383 + ... + 31305.

It is an arithmetic number, because the mean of its divisors is an integer number (12770850).

Almost surely, 2^400471512 is an apocalyptic number.

400471512 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400471512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613000800).

400471512 is an abundant number, since it is smaller than the sum of its proper divisors (825530088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400471512 is a wasteful number, since it uses less digits than its factorization.

400471512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17965 (or 17954 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 400471512 is about 20011.7843282402. The cubic root of 400471512 is about 737.0956968893.

The spelling of 400471512 in words is "four hundred million, four hundred seventy-one thousand, five hundred twelve".