49389490 has 32 divisors (see below), whose sum is σ = 91445760. Its totient is φ = 19198464.

The previous prime is 49389467. The next prime is 49389497. The reversal of 49389490 is 9498394.

It is a self number, because there is not a number n which added to its sum of digits gives 49389490.

It is not an unprimeable number, because it can be changed into a prime (49389497) 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, 56799 + ... + 57661.

It is an arithmetic number, because the mean of its divisors is an integer number (2857680).

Almost surely, 2^49389490 is an apocalyptic number.

49389490 is a deficient number, since it is larger than the sum of its proper divisors (42056270).

49389490 is a wasteful number, since it uses less digits than its factorization.

49389490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 49389490 is about 7027.7656477717. The cubic root of 49389490 is about 366.8975799849.

The spelling of 49389490 in words is "forty-nine million, three hundred eighty-nine thousand, four hundred ninety".