80121379 has 12 divisors (see below), whose sum is σ = 87465216. Its totient is φ = 73356192.

The previous prime is 80121373. The next prime is 80121383. The reversal of 80121379 is 97312108.

It is not a de Polignac number, because 80121379 - 2²¹ = 78024227 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 80121379.

It is not an unprimeable number, because it can be changed into a prime (80121373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19597 + ... + 23329.

It is an arithmetic number, because the mean of its divisors is an integer number (7288768).

Almost surely, 2^80121379 is an apocalyptic number.

80121379 is a deficient number, since it is larger than the sum of its proper divisors (7343837).

80121379 is a wasteful number, since it uses less digits than its factorization.

80121379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3886 (or 3873 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 80121379 is about 8951.0546306008. The cubic root of 80121379 is about 431.1047471610.

The spelling of 80121379 in words is "eighty million, one hundred twenty-one thousand, three hundred seventy-nine".