49998390 has 32 divisors (see below), whose sum is σ = 129227616. Its totient is φ = 12307200.

The previous prime is 49998371. The next prime is 49998397. The reversal of 49998390 is 9389994.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49998397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63711 + ... + 64490.

It is an arithmetic number, because the mean of its divisors is an integer number (4038363).

Almost surely, 2^49998390 is an apocalyptic number.

49998390 is an abundant number, since it is smaller than the sum of its proper divisors (79229226).

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

49998390 is a wasteful number, since it uses less digits than its factorization.

49998390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128224.

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 49998390 is about 7070.9539667572. The cubic root of 49998390 is about 368.3991956278.

It can be divided in two parts, 499 and 98390, that added together give a palindrome (98889).

The spelling of 49998390 in words is "forty-nine million, nine hundred ninety-eight thousand, three hundred ninety".