400377400470 has 80 divisors (see below), whose sum is σ = 1078069227840. Its totient is φ = 106618657536.

The previous prime is 400377400457. The next prime is 400377400471. The reversal of 400377400470 is 74004773004.

It is a super-2 number, since 2×400377400470² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400377400471) 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 39 ways as a sum of consecutive naturals, for example, 238654 + ... + 926126.

It is an arithmetic number, because the mean of its divisors is an integer number (13475865348).

Almost surely, 2^400377400470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400377400470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539034613920).

400377400470 is an abundant number, since it is smaller than the sum of its proper divisors (677691827370).

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

400377400470 is a wasteful number, since it uses less digits than its factorization.

400377400470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688211 (or 688202 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 36.

The spelling of 400377400470 in words is "four hundred billion, three hundred seventy-seven million, four hundred thousand, four hundred seventy".