400465345 has 32 divisors (see below), whose sum is σ = 583200000. Its totient is φ = 257703936.

The previous prime is 400465313. The next prime is 400465349. The reversal of 400465345 is 543564004.

It is not a de Polignac number, because 400465345 - 2⁵ = 400465313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400465349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266406 + ... + 267904.

It is an arithmetic number, because the mean of its divisors is an integer number (18225000).

Almost surely, 2^400465345 is an apocalyptic number.

It is an amenable number.

400465345 is a deficient number, since it is larger than the sum of its proper divisors (182734655).

400465345 is a wasteful number, since it uses less digits than its factorization.

400465345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 400465345 is about 20011.6302434359. The cubic root of 400465345 is about 737.0919132723.

The spelling of 400465345 in words is "four hundred million, four hundred sixty-five thousand, three hundred forty-five".