157744079 has 8 divisors (see below), whose sum is σ = 166656960. Its totient is φ = 149062816.

The previous prime is 157744057. The next prime is 157744091. The reversal of 157744079 is 970447751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157744079 - 2¹² = 157739983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157744049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56504 + ... + 59229.

It is an arithmetic number, because the mean of its divisors is an integer number (20832120).

Almost surely, 2^157744079 is an apocalyptic number.

157744079 is a deficient number, since it is larger than the sum of its proper divisors (8912881).

157744079 is a wasteful number, since it uses less digits than its factorization.

157744079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115809.

The product of its (nonzero) digits is 246960, while the sum is 44.

The square root of 157744079 is about 12559.6209735804. The cubic root of 157744079 is about 540.3199738299.

The spelling of 157744079 in words is "one hundred fifty-seven million, seven hundred forty-four thousand, seventy-nine".