79101947 has 2 divisors, whose sum is σ = 79101948. Its totient is φ = 79101946.

The previous prime is 79101941. The next prime is 79101973. The reversal of 79101947 is 74910197.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79101947 - 2⁴ = 79101931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79101947.

It is not a weakly prime, because it can be changed into another prime (79101941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39550973 + 39550974.

It is an arithmetic number, because the mean of its divisors is an integer number (39550974).

Almost surely, 2^79101947 is an apocalyptic number.

79101947 is a deficient number, since it is larger than the sum of its proper divisors (1).

79101947 is an equidigital number, since it uses as much as digits as its factorization.

79101947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 79101947 is about 8893.9275351219. The cubic root of 79101947 is about 429.2685364904.

The spelling of 79101947 in words is "seventy-nine million, one hundred one thousand, nine hundred forty-seven".