949399990 has 64 divisors (see below), whose sum is σ = 2174169600. Its totient is φ = 295905120.

The previous prime is 949399973. The next prime is 949399993. The reversal of 949399990 is 99993949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (949399993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25149 + ... + 50311.

It is an arithmetic number, because the mean of its divisors is an integer number (33971400).

Almost surely, 2^949399990 is an apocalyptic number.

949399990 is an abundant number, since it is smaller than the sum of its proper divisors (1224769610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

949399990 is a wasteful number, since it uses less digits than its factorization.

949399990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25202 (or 25188 counting only the distinct ones).

The product of its (nonzero) digits is 6377292, while the sum is 61.

The square root of 949399990 is about 30812.3350299843. The cubic root of 949399990 is about 982.8405680719.

The spelling of 949399990 in words is "nine hundred forty-nine million, three hundred ninety-nine thousand, nine hundred ninety".