400992134 has 4 divisors (see below), whose sum is σ = 601488204. Its totient is φ = 200496066.

The previous prime is 400992079. The next prime is 400992187. The reversal of 400992134 is 431299004.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 400992134.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100248032 + ... + 100248035.

It is an arithmetic number, because the mean of its divisors is an integer number (150372051).

Almost surely, 2^400992134 is an apocalyptic number.

400992134 is a deficient number, since it is larger than the sum of its proper divisors (200496070).

400992134 is a wasteful number, since it uses less digits than its factorization.

400992134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200496069.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 400992134 is about 20024.7879888902. The cubic root of 400992134 is about 737.4149722523.

The spelling of 400992134 in words is "four hundred million, nine hundred ninety-two thousand, one hundred thirty-four".