400457797 has 8 divisors (see below), whose sum is σ = 427355136. Its totient is φ = 373931712.

The previous prime is 400457789. The next prime is 400457803. The reversal of 400457797 is 797754004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400457797 - 2³ = 400457789 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 (400457747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90583 + ... + 94900.

It is an arithmetic number, because the mean of its divisors is an integer number (53419392).

Almost surely, 2^400457797 is an apocalyptic number.

It is an amenable number.

400457797 is a deficient number, since it is larger than the sum of its proper divisors (26897339).

400457797 is a wasteful number, since it uses less digits than its factorization.

400457797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185627.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 400457797 is about 20011.4416522149. The cubic root of 400457797 is about 737.0872823225.

The spelling of 400457797 in words is "four hundred million, four hundred fifty-seven thousand, seven hundred ninety-seven".