3074872921 has 4 divisors (see below), whose sum is σ = 3208563072. Its totient is φ = 2941182772.

The previous prime is 3074872883. The next prime is 3074872949. The reversal of 3074872921 is 1292784703.

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-3074872921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3074872991) 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, 66845041 + ... + 66845086.

It is an arithmetic number, because the mean of its divisors is an integer number (802140768).

Almost surely, 2^3074872921 is an apocalyptic number.

It is an amenable number.

3074872921 is a deficient number, since it is larger than the sum of its proper divisors (133690151).

3074872921 is a wasteful number, since it uses less digits than its factorization.

3074872921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133690150.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 3074872921 is about 55451.5366874535. The cubic root of 3074872921 is about 1454.1494966075.

The spelling of 3074872921 in words is "three billion, seventy-four million, eight hundred seventy-two thousand, nine hundred twenty-one".