79134431 has 2 divisors, whose sum is σ = 79134432. Its totient is φ = 79134430.

The previous prime is 79134403. The next prime is 79134463. The reversal of 79134431 is 13443197.

It is an a-pointer prime, because the next prime (79134463) can be obtained adding 79134431 to its sum of digits (32).

It is a weak prime.

It is an emirp because it is prime and its reverse (13443197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79134431 - 2¹⁰ = 79133407 is a prime.

It is a super-2 number, since 2×79134431² = 12524516339387522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79134401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39567215 + 39567216.

It is an arithmetic number, because the mean of its divisors is an integer number (39567216).

Almost surely, 2^79134431 is an apocalyptic number.

79134431 is a deficient number, since it is larger than the sum of its proper divisors (1).

79134431 is an equidigital number, since it uses as much as digits as its factorization.

79134431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 79134431 is about 8895.7535375032. The cubic root of 79134431 is about 429.3272895776.

The spelling of 79134431 in words is "seventy-nine million, one hundred thirty-four thousand, four hundred thirty-one".