7956400405 has 8 divisors (see below), whose sum is σ = 9750822912. Its totient is φ = 6229692048.

The previous prime is 7956400393. The next prime is 7956400421. The reversal of 7956400405 is 5040046597.

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

It is a cyclic number.

It is not a de Polignac number, because 7956400405 - 2¹¹ = 7956398357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16928277 + ... + 16928746.

It is an arithmetic number, because the mean of its divisors is an integer number (1218852864).

Almost surely, 2^7956400405 is an apocalyptic number.

It is an amenable number.

7956400405 is a deficient number, since it is larger than the sum of its proper divisors (1794422507).

7956400405 is a wasteful number, since it uses less digits than its factorization.

7956400405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33857075.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 7956400405 is about 89198.6569685889. The cubic root of 7956400405 is about 1996.3600799264.

The spelling of 7956400405 in words is "seven billion, nine hundred fifty-six million, four hundred thousand, four hundred five".