79293481 has 2 divisors, whose sum is σ = 79293482. Its totient is φ = 79293480.

The previous prime is 79293433. The next prime is 79293499. The reversal of 79293481 is 18439297.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78499600 + 793881 = 8860^2 + 891^2 .

It is an emirp because it is prime and its reverse (18439297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79293481 - 2¹⁷ = 79162409 is a prime.

It is a super-2 number, since 2×79293481² = 12574912258194722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79293421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39646740 + 39646741.

It is an arithmetic number, because the mean of its divisors is an integer number (39646741).

Almost surely, 2^79293481 is an apocalyptic number.

It is an amenable number.

79293481 is a deficient number, since it is larger than the sum of its proper divisors (1).

79293481 is an equidigital number, since it uses as much as digits as its factorization.

79293481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 79293481 is about 8904.6887087646. The cubic root of 79293481 is about 429.6147279188.

The spelling of 79293481 in words is "seventy-nine million, two hundred ninety-three thousand, four hundred eighty-one".