157689479 has 2 divisors, whose sum is σ = 157689480. Its totient is φ = 157689478.

The previous prime is 157689473. The next prime is 157689481. The reversal of 157689479 is 974986751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157689479 - 2⁴ = 157689463 is a prime.

Together with 157689481, 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 (157689473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78844739 + 78844740.

It is an arithmetic number, because the mean of its divisors is an integer number (78844740).

Almost surely, 2^157689479 is an apocalyptic number.

157689479 is a deficient number, since it is larger than the sum of its proper divisors (1).

157689479 is an equidigital number, since it uses as much as digits as its factorization.

157689479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 56.

The square root of 157689479 is about 12557.4471529846. The cubic root of 157689479 is about 540.2576262705.

The spelling of 157689479 in words is "one hundred fifty-seven million, six hundred eighty-nine thousand, four hundred seventy-nine".