990002455 has 32 divisors (see below), whose sum is σ = 1338664320. Its totient is φ = 697382400.

The previous prime is 990002443. The next prime is 990002471. The reversal of 990002455 is 554200099.

990002455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 990002455 - 2¹⁷ = 989871383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 990002455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 760305 + ... + 761605.

It is an arithmetic number, because the mean of its divisors is an integer number (41833260).

Almost surely, 2^990002455 is an apocalyptic number.

990002455 is a deficient number, since it is larger than the sum of its proper divisors (348661865).

990002455 is a wasteful number, since it uses less digits than its factorization.

990002455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 990002455 is about 31464.3044575913. The cubic root of 990002455 is about 996.6563172467.

The spelling of 990002455 in words is "nine hundred ninety million, two thousand, four hundred fifty-five".