79751069 has 2 divisors, whose sum is σ = 79751070. Its totient is φ = 79751068.

The previous prime is 79751011. The next prime is 79751071. The reversal of 79751069 is 96015797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41434969 + 38316100 = 6437^2 + 6190^2 .

It is a cyclic number.

It is not a de Polignac number, because 79751069 - 2⁸ = 79750813 is a prime.

It is a super-2 number, since 2×79751069² = 12720466013285522, which contains 22 as substring.

Together with 79751071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79751099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39875534 + 39875535.

It is an arithmetic number, because the mean of its divisors is an integer number (39875535).

Almost surely, 2^79751069 is an apocalyptic number.

It is an amenable number.

79751069 is a deficient number, since it is larger than the sum of its proper divisors (1).

79751069 is an equidigital number, since it uses as much as digits as its factorization.

79751069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 79751069 is about 8930.3454020547. The cubic root of 79751069 is about 430.4395523328.

The spelling of 79751069 in words is "seventy-nine million, seven hundred fifty-one thousand, sixty-nine".