400506508799 has 8 divisors (see below), whose sum is σ = 402435476352. Its totient is φ = 398578728960.

The previous prime is 400506508777. The next prime is 400506508811. The reversal of 400506508799 is 997805605004.

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-400506508799 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 400506508799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400506508729) 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, 382847 + ... + 973439.

It is an arithmetic number, because the mean of its divisors is an integer number (50304434544).

Almost surely, 2^400506508799 is an apocalyptic number.

400506508799 is a deficient number, since it is larger than the sum of its proper divisors (1928967553).

400506508799 is a wasteful number, since it uses less digits than its factorization.

400506508799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593857.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 400506508799 in words is "four hundred billion, five hundred six million, five hundred eight thousand, seven hundred ninety-nine".