400045607 has 16 divisors (see below), whose sum is σ = 446208000. Its totient is φ = 356162400.

The previous prime is 400045603. The next prime is 400045619. The reversal of 400045607 is 706540004.

It is a cyclic number.

It is not a de Polignac number, because 400045607 - 2² = 400045603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400045603) 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, 131894 + ... + 134892.

It is an arithmetic number, because the mean of its divisors is an integer number (27888000).

Almost surely, 2^400045607 is an apocalyptic number.

400045607 is a deficient number, since it is larger than the sum of its proper divisors (46162393).

400045607 is a wasteful number, since it uses less digits than its factorization.

400045607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 400045607 is about 20001.1401425019. The cubic root of 400045607 is about 736.8343016013.

The spelling of 400045607 in words is "four hundred million, forty-five thousand, six hundred seven".