49698989 has 4 divisors (see below), whose sum is σ = 50297856. Its totient is φ = 49100124.

The previous prime is 49698977. The next prime is 49698991. The reversal of 49698989 is 98989694.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49698989 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49698919) 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, 299309 + ... + 299474.

It is an arithmetic number, because the mean of its divisors is an integer number (12574464).

Almost surely, 2^49698989 is an apocalyptic number.

It is an amenable number.

49698989 is a deficient number, since it is larger than the sum of its proper divisors (598867).

49698989 is an equidigital number, since it uses as much as digits as its factorization.

49698989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598866.

The product of its digits is 10077696, while the sum is 62.

The square root of 49698989 is about 7049.7509885102. The cubic root of 49698989 is about 367.6623719837.

The spelling of 49698989 in words is "forty-nine million, six hundred ninety-eight thousand, nine hundred eighty-nine".