49389900 has 144 divisors (see below), whose sum is σ = 169155840. Its totient is φ = 10886400.

The previous prime is 49389877. The next prime is 49389917. The reversal of 49389900 is 998394.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60495 + ... + 61305.

Almost surely, 2^49389900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49389900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84577920).

49389900 is an abundant number, since it is smaller than the sum of its proper divisors (119765940).

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

49389900 is a wasteful number, since it uses less digits than its factorization.

49389900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 49389900 is about 7027.7948177220. The cubic root of 49389900 is about 366.8985952318.

The spelling of 49389900 in words is "forty-nine million, three hundred eighty-nine thousand, nine hundred".