49971923 has 4 divisors (see below), whose sum is σ = 50002368. Its totient is φ = 49941480.

The previous prime is 49971917. The next prime is 49971947. The reversal of 49971923 is 32917994.

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 49971923 - 2⁸ = 49971667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49971913) 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, 12611 + ... + 16092.

It is an arithmetic number, because the mean of its divisors is an integer number (12500592).

Almost surely, 2^49971923 is an apocalyptic number.

49971923 is a deficient number, since it is larger than the sum of its proper divisors (30445).

49971923 is a wasteful number, since it uses less digits than its factorization.

49971923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30444.

The product of its digits is 122472, while the sum is 44.

The square root of 49971923 is about 7069.0821893652. The cubic root of 49971923 is about 368.3341792509.

The spelling of 49971923 in words is "forty-nine million, nine hundred seventy-one thousand, nine hundred twenty-three".