400262402 has 4 divisors (see below), whose sum is σ = 600393606. Its totient is φ = 200131200.

The previous prime is 400262381. The next prime is 400262407. The reversal of 400262402 is 204262004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 206468161 + 193794241 = 14369^2 + 13921^2 .

It is not an unprimeable number, because it can be changed into a prime (400262407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100065599 + ... + 100065602.

Almost surely, 2^400262402 is an apocalyptic number.

400262402 is a deficient number, since it is larger than the sum of its proper divisors (200131204).

400262402 is a wasteful number, since it uses less digits than its factorization.

400262402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200131203.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 400262402 is about 20006.5589744963. The cubic root of 400262402 is about 736.9673807155.

The spelling of 400262402 in words is "four hundred million, two hundred sixty-two thousand, four hundred two".