49990623 has 4 divisors (see below), whose sum is σ = 66654168. Its totient is φ = 33327080.

The previous prime is 49990613. The next prime is 49990649. The reversal of 49990623 is 32609994.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49990623 - 2⁶ = 49990559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49990613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8331768 + ... + 8331773.

It is an arithmetic number, because the mean of its divisors is an integer number (16663542).

Almost surely, 2^49990623 is an apocalyptic number.

49990623 is a deficient number, since it is larger than the sum of its proper divisors (16663545).

49990623 is a wasteful number, since it uses less digits than its factorization.

49990623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16663544.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 49990623 is about 7070.4047267466. The cubic root of 49990623 is about 368.3801183153.

The spelling of 49990623 in words is "forty-nine million, nine hundred ninety thousand, six hundred twenty-three".