996405355 has 12 divisors (see below), whose sum is σ = 1314267696. Its totient is φ = 724658000.

The previous prime is 996405349. The next prime is 996405373. The reversal of 996405355 is 553504699.

It is not a de Polignac number, because 996405355 - 2²⁵ = 962850923 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 822871 + ... + 824080.

It is an arithmetic number, because the mean of its divisors is an integer number (109522308).

Almost surely, 2^996405355 is an apocalyptic number.

996405355 is a deficient number, since it is larger than the sum of its proper divisors (317862341).

996405355 is a wasteful number, since it uses less digits than its factorization.

996405355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646978 (or 1646967 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 46.

The square root of 996405355 is about 31565.8891051717. The cubic root of 996405355 is about 998.8003464068.

It can be divided in two parts, 996 and 405355, that added together give a triangular number (406351 = T₉₀₁).

The spelling of 996405355 in words is "nine hundred ninety-six million, four hundred five thousand, three hundred fifty-five".