990255477 has 8 divisors (see below), whose sum is σ = 1323231616. Its totient is φ = 658724832.

The previous prime is 990255467. The next prime is 990255503. The reversal of 990255477 is 774552099.

990255477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 990255477 - 2⁷ = 990255349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990255467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359773 + ... + 362514.

It is an arithmetic number, because the mean of its divisors is an integer number (165403952).

Almost surely, 2^990255477 is an apocalyptic number.

It is an amenable number.

990255477 is a deficient number, since it is larger than the sum of its proper divisors (332976139).

990255477 is a wasteful number, since it uses less digits than its factorization.

990255477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722747.

The product of its (nonzero) digits is 793800, while the sum is 48.

The square root of 990255477 is about 31468.3249792549. The cubic root of 990255477 is about 996.7412175393.

The spelling of 990255477 in words is "nine hundred ninety million, two hundred fifty-five thousand, four hundred seventy-seven".