74983421 has 4 divisors (see below), whose sum is σ = 75016512. Its totient is φ = 74950332.

The previous prime is 74983417. The next prime is 74983439. The reversal of 74983421 is 12438947.

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 74983421 - 2² = 74983417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74923421) 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, 12875 + ... + 17768.

It is an arithmetic number, because the mean of its divisors is an integer number (18754128).

Almost surely, 2^74983421 is an apocalyptic number.

It is an amenable number.

74983421 is a deficient number, since it is larger than the sum of its proper divisors (33091).

74983421 is a wasteful number, since it uses less digits than its factorization.

74983421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33090.

The product of its digits is 48384, while the sum is 38.

The square root of 74983421 is about 8659.2967959298. The cubic root of 74983421 is about 421.6852564272.

The spelling of 74983421 in words is "seventy-four million, nine hundred eighty-three thousand, four hundred twenty-one".