400774377 has 16 divisors (see below), whose sum is σ = 538755840. Its totient is φ = 264996432.

The previous prime is 400774357. The next prime is 400774399. The reversal of 400774377 is 773477004.

It is not a de Polignac number, because 400774377 - 2⁶ = 400774313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400774327) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 280138 + ... + 281564.

It is an arithmetic number, because the mean of its divisors is an integer number (33672240).

Almost surely, 2^400774377 is an apocalyptic number.

It is an amenable number.

400774377 is a deficient number, since it is larger than the sum of its proper divisors (137981463).

400774377 is a wasteful number, since it uses less digits than its factorization.

400774377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132.

The product of its (nonzero) digits is 115248, while the sum is 39.

The square root of 400774377 is about 20019.3500643752. The cubic root of 400774377 is about 737.2814647724.

The spelling of 400774377 in words is "four hundred million, seven hundred seventy-four thousand, three hundred seventy-seven".