400754907 has 12 divisors (see below), whose sum is σ = 661563760. Its totient is φ = 229002768.

The previous prime is 400754891. The next prime is 400754917. The reversal of 400754907 is 709457004.

It is a happy number.

It is not a de Polignac number, because 400754907 - 2⁴ = 400754891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400754917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3180532 + ... + 3180657.

Almost surely, 2^400754907 is an apocalyptic number.

400754907 is a deficient number, since it is larger than the sum of its proper divisors (260808853).

400754907 is a wasteful number, since it uses less digits than its factorization.

400754907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6361202 (or 6361199 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 400754907 is about 20018.8637789461. The cubic root of 400754907 is about 737.2695253011.

The spelling of 400754907 in words is "four hundred million, seven hundred fifty-four thousand, nine hundred seven".