49359989 has 4 divisors (see below), whose sum is σ = 56411424. Its totient is φ = 42308556.

The previous prime is 49359977. The next prime is 49359991. The reversal of 49359989 is 98995394.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98995394 = 2 ⋅49497697.

It is a cyclic number.

It is not a de Polignac number, because 49359989 - 2²⁰ = 48311413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49359949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3525707 + ... + 3525720.

It is an arithmetic number, because the mean of its divisors is an integer number (14102856).

Almost surely, 2^49359989 is an apocalyptic number.

It is an amenable number.

49359989 is a deficient number, since it is larger than the sum of its proper divisors (7051435).

49359989 is an equidigital number, since it uses as much as digits as its factorization.

49359989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7051434.

The product of its digits is 3149280, while the sum is 56.

The square root of 49359989 is about 7025.6664452563. Note that the first 3 decimals coincide. The cubic root of 49359989 is about 366.8245144987.

The spelling of 49359989 in words is "forty-nine million, three hundred fifty-nine thousand, nine hundred eighty-nine".