400036079 has 4 divisors (see below), whose sum is σ = 417428976. Its totient is φ = 382643184.

The previous prime is 400036037. The next prime is 400036097. The reversal of 400036079 is 970630004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400036079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400036099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8696414 + ... + 8696459.

It is an arithmetic number, because the mean of its divisors is an integer number (104357244).

Almost surely, 2^400036079 is an apocalyptic number.

400036079 is a deficient number, since it is larger than the sum of its proper divisors (17392897).

400036079 is a wasteful number, since it uses less digits than its factorization.

400036079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17392896.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 400036079 is about 20000.9019546619. The cubic root of 400036079 is about 736.8284517575.

The spelling of 400036079 in words is "four hundred million, thirty-six thousand, seventy-nine".