79420153 has 2 divisors, whose sum is σ = 79420154. Its totient is φ = 79420152.

The previous prime is 79420091. The next prime is 79420181. The reversal of 79420153 is 35102497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66373609 + 13046544 = 8147^2 + 3612^2 .

It is an emirp because it is prime and its reverse (35102497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79420153 - 2¹³ = 79411961 is a prime.

It is not a weakly prime, because it can be changed into another prime (79480153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39710076 + 39710077.

It is an arithmetic number, because the mean of its divisors is an integer number (39710077).

Almost surely, 2^79420153 is an apocalyptic number.

It is an amenable number.

79420153 is a deficient number, since it is larger than the sum of its proper divisors (1).

79420153 is an equidigital number, since it uses as much as digits as its factorization.

79420153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 79420153 is about 8911.7985277945. The cubic root of 79420153 is about 429.8433772476.

The spelling of 79420153 in words is "seventy-nine million, four hundred twenty thousand, one hundred fifty-three".