400793746 has 8 divisors (see below), whose sum is σ = 621921420. Its totient is φ = 193486608.

The previous prime is 400793707. The next prime is 400793747. The reversal of 400793746 is 647397004.

It can be written as a sum of positive squares in 2 ways, for example, as 361418121 + 39375625 = 19011^2 + 6275^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 400793699 and 400793708.

It is not an unprimeable number, because it can be changed into a prime (400793747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3455061 + ... + 3455176.

Almost surely, 2^400793746 is an apocalyptic number.

400793746 is a deficient number, since it is larger than the sum of its proper divisors (221127674).

400793746 is a wasteful number, since it uses less digits than its factorization.

400793746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6910268.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 400793746 is about 20019.8338154941. The cubic root of 400793746 is about 737.2933419245.

The spelling of 400793746 in words is "four hundred million, seven hundred ninety-three thousand, seven hundred forty-six".