990704377 has 4 divisors (see below), whose sum is σ = 1066912420. Its totient is φ = 914496336.

The previous prime is 990704353. The next prime is 990704381. The reversal of 990704377 is 773407099.

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

It can be written as a sum of positive squares in 2 ways, for example, as 407192041 + 583512336 = 20179^2 + 24156^2 .

It is not a de Polignac number, because 990704377 - 2²⁷ = 856486649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990704317) 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, 38104002 + ... + 38104027.

It is an arithmetic number, because the mean of its divisors is an integer number (266728105).

Almost surely, 2^990704377 is an apocalyptic number.

It is an amenable number.

990704377 is a deficient number, since it is larger than the sum of its proper divisors (76208043).

990704377 is a wasteful number, since it uses less digits than its factorization.

990704377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76208042.

The product of its (nonzero) digits is 333396, while the sum is 46.

The square root of 990704377 is about 31475.4567401333. The cubic root of 990704377 is about 996.8918081527.

The spelling of 990704377 in words is "nine hundred ninety million, seven hundred four thousand, three hundred seventy-seven".