400680338 has 8 divisors (see below), whose sum is σ = 605407932. Its totient is φ = 198877696.

The previous prime is 400680323. The next prime is 400680383. The reversal of 400680338 is 833086004.

It can be written as a sum of positive squares in 2 ways, for example, as 400680289 + 49 = 20017^2 + 7^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730895 + ... + 731442.

Almost surely, 2^400680338 is an apocalyptic number.

400680338 is a deficient number, since it is larger than the sum of its proper divisors (204727594).

400680338 is a wasteful number, since it uses less digits than its factorization.

400680338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462476.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 400680338 is about 20017.0012239596. The cubic root of 400680338 is about 737.2237942233.

The spelling of 400680338 in words is "four hundred million, six hundred eighty thousand, three hundred thirty-eight".