49621973 has 4 divisors (see below), whose sum is σ = 49840800. Its totient is φ = 49403148.

The previous prime is 49621961. The next prime is 49621981. The reversal of 49621973 is 37912694.

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-49621973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49621973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49621073) 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, 109073 + ... + 109526.

It is an arithmetic number, because the mean of its divisors is an integer number (12460200).

Almost surely, 2^49621973 is an apocalyptic number.

It is an amenable number.

49621973 is a deficient number, since it is larger than the sum of its proper divisors (218827).

49621973 is a wasteful number, since it uses less digits than its factorization.

49621973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218826.

The product of its digits is 81648, while the sum is 41.

The square root of 49621973 is about 7044.2865501057. The cubic root of 49621973 is about 367.4723578944.

The spelling of 49621973 in words is "forty-nine million, six hundred twenty-one thousand, nine hundred seventy-three".