49321989 has 12 divisors (see below), whose sum is σ = 72900256. Its totient is φ = 32116392.

The previous prime is 49321969. The next prime is 49321997. The reversal of 49321989 is 98912394.

It is not a de Polignac number, because 49321989 - 2⁹ = 49321477 is a prime.

It is a super-2 number, since 2×49321989² = 4865317197832242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49321919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63337 + ... + 64110.

Almost surely, 2^49321989 is an apocalyptic number.

It is an amenable number.

49321989 is a deficient number, since it is larger than the sum of its proper divisors (23578267).

49321989 is a wasteful number, since it uses less digits than its factorization.

49321989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127496 (or 127493 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 49321989 is about 7022.9615547858. The cubic root of 49321989 is about 366.7303565214.

The spelling of 49321989 in words is "forty-nine million, three hundred twenty-one thousand, nine hundred eighty-nine".