4079159921 has 2 divisors, whose sum is σ = 4079159922. Its totient is φ = 4079159920.

The previous prime is 4079159897. The next prime is 4079159941. The reversal of 4079159921 is 1299519704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4027679296 + 51480625 = 63464^2 + 7175^2 .

It is a cyclic number.

It is not a de Polignac number, because 4079159921 - 2¹⁸ = 4078897777 is a prime.

It is a super-2 number, since 2×4079159921² = 33279091322185452482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4079159941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2039579960 + 2039579961.

It is an arithmetic number, because the mean of its divisors is an integer number (2039579961).

Almost surely, 2^4079159921 is an apocalyptic number.

It is an amenable number.

4079159921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4079159921 is an equidigital number, since it uses as much as digits as its factorization.

4079159921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 47.

The square root of 4079159921 is about 63868.3013786965. The cubic root of 4079159921 is about 1597.8042694883.

The spelling of 4079159921 in words is "four billion, seventy-nine million, one hundred fifty-nine thousand, nine hundred twenty-one".