84699157 has 2 divisors, whose sum is σ = 84699158. Its totient is φ = 84699156.

The previous prime is 84699149. The next prime is 84699163. The reversal of 84699157 is 75199648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84474481 + 224676 = 9191^2 + 474^2 .

It is a cyclic number.

It is not a de Polignac number, because 84699157 - 2³ = 84699149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84699157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84699107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42349578 + 42349579.

It is an arithmetic number, because the mean of its divisors is an integer number (42349579).

Almost surely, 2^84699157 is an apocalyptic number.

It is an amenable number.

84699157 is a deficient number, since it is larger than the sum of its proper divisors (1).

84699157 is an equidigital number, since it uses as much as digits as its factorization.

84699157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 84699157 is about 9203.2144927737. The cubic root of 84699157 is about 439.1636264078.

The spelling of 84699157 in words is "eighty-four million, six hundred ninety-nine thousand, one hundred fifty-seven".