400377055679 has 8 divisors (see below), whose sum is σ = 417791144160. Its totient is φ = 382963499776.

The previous prime is 400377055649. The next prime is 400377055709. The reversal of 400377055679 is 976550773004.

It is an interprime number because it is at equal distance from previous prime (400377055649) and next prime (400377055709).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400377055679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400377055679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400377055649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2577287 + ... + 2728215.

It is an arithmetic number, because the mean of its divisors is an integer number (52223893020).

Almost surely, 2^400377055679 is an apocalyptic number.

400377055679 is a deficient number, since it is larger than the sum of its proper divisors (17414088481).

400377055679 is a wasteful number, since it uses less digits than its factorization.

400377055679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266289.

The product of its (nonzero) digits is 5556600, while the sum is 53.

The spelling of 400377055679 in words is "four hundred billion, three hundred seventy-seven million, fifty-five thousand, six hundred seventy-nine".