990975413 has 4 divisors (see below), whose sum is σ = 991603008. Its totient is φ = 990347820.

The previous prime is 990975367. The next prime is 990975449. The reversal of 990975413 is 314579099.

990975413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 314579099 = 43 ⋅7315793.

It is a cyclic number.

It is not a de Polignac number, because 990975413 - 2²² = 986781109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990975113) 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, 311423 + ... + 314588.

It is an arithmetic number, because the mean of its divisors is an integer number (247900752).

Almost surely, 2^990975413 is an apocalyptic number.

It is an amenable number.

990975413 is a deficient number, since it is larger than the sum of its proper divisors (627595).

990975413 is a wasteful number, since it uses less digits than its factorization.

990975413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627594.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 990975413 is about 31479.7619590746. The cubic root of 990975413 is about 996.9827094476.

The spelling of 990975413 in words is "nine hundred ninety million, nine hundred seventy-five thousand, four hundred thirteen".