401798402 has 8 divisors (see below), whose sum is σ = 608665212. Its totient is φ = 198910000.

The previous prime is 401798389. The next prime is 401798473. The reversal of 401798402 is 204897104.

It can be written as a sum of positive squares in 2 ways, for example, as 378652681 + 23145721 = 19459^2 + 4811^2 .

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

It is a super-2 number, since 2×401798402² = 322883911699507208, which contains 22 as substring.

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, 994349 + ... + 994752.

Almost surely, 2^401798402 is an apocalyptic number.

401798402 is a deficient number, since it is larger than the sum of its proper divisors (206866810).

401798402 is a wasteful number, since it uses less digits than its factorization.

401798402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989204.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 401798402 is about 20044.9096281325. The cubic root of 401798402 is about 737.9088772465.

The spelling of 401798402 in words is "four hundred one million, seven hundred ninety-eight thousand, four hundred two".