400032297 has 16 divisors (see below), whose sum is σ = 677303680. Its totient is φ = 228589776.

The previous prime is 400032239. The next prime is 400032323. The reversal of 400032297 is 792230004.

It is not a de Polignac number, because 400032297 - 2⁸ = 400032041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400032297.

It is not an unprimeable number, because it can be changed into a prime (400032497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1058098 + ... + 1058475.

It is an arithmetic number, because the mean of its divisors is an integer number (42331480).

Almost surely, 2^400032297 is an apocalyptic number.

It is an amenable number.

400032297 is a deficient number, since it is larger than the sum of its proper divisors (277271383).

400032297 is a wasteful number, since it uses less digits than its factorization.

400032297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116589 (or 2116583 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 400032297 is about 20000.8074087023. The cubic root of 400032297 is about 736.8261297219.

The spelling of 400032297 in words is "four hundred million, thirty-two thousand, two hundred ninety-seven".