400515471 has 12 divisors (see below), whose sum is σ = 580500648. Its totient is φ = 266097264.

The previous prime is 400515469. The next prime is 400515499. The reversal of 400515471 is 174515004.

It is a happy number.

It is not a de Polignac number, because 400515471 - 2¹ = 400515469 is a prime.

It is a super-3 number, since 3×400515471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400515671) 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 11 ways as a sum of consecutive naturals, for example, 73305 + ... + 78578.

It is an arithmetic number, because the mean of its divisors is an integer number (48375054).

Almost surely, 2^400515471 is an apocalyptic number.

400515471 is a deficient number, since it is larger than the sum of its proper divisors (179985177).

400515471 is a wasteful number, since it uses less digits than its factorization.

400515471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152182 (or 152179 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 400515471 is about 20012.8826259487. The cubic root of 400515471 is about 737.1226657691.

The spelling of 400515471 in words is "four hundred million, five hundred fifteen thousand, four hundred seventy-one".