400694146 has 8 divisors (see below), whose sum is σ = 601311564. Its totient is φ = 200256960.

The previous prime is 400694143. The next prime is 400694171. The reversal of 400694146 is 641496004.

It can be written as a sum of positive squares in 2 ways, for example, as 392634225 + 8059921 = 19815^2 + 2839^2 .

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

It is not an unprimeable number, because it can be changed into a prime (400694143) 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, 39355 + ... + 48478.

Almost surely, 2^400694146 is an apocalyptic number.

400694146 is a deficient number, since it is larger than the sum of its proper divisors (200617418).

400694146 is a wasteful number, since it uses less digits than its factorization.

400694146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90116.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 400694146 is about 20017.3461277963. The cubic root of 400694146 is about 737.2322627107.

The spelling of 400694146 in words is "four hundred million, six hundred ninety-four thousand, one hundred forty-six".