76238921 has 4 divisors (see below), whose sum is σ = 83169744. Its totient is φ = 69308100.

The previous prime is 76238917. The next prime is 76238927. The reversal of 76238921 is 12983267.

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 not a de Polignac number, because 76238921 - 2² = 76238917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76238927) 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, 3465395 + ... + 3465416.

It is an arithmetic number, because the mean of its divisors is an integer number (20792436).

Almost surely, 2^76238921 is an apocalyptic number.

It is an amenable number.

76238921 is a deficient number, since it is larger than the sum of its proper divisors (6930823).

76238921 is a wasteful number, since it uses less digits than its factorization.

76238921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6930822.

The product of its digits is 36288, while the sum is 38.

The square root of 76238921 is about 8731.4901935466. The cubic root of 76238921 is about 424.0257656853.

The spelling of 76238921 in words is "seventy-six million, two hundred thirty-eight thousand, nine hundred twenty-one".