157047439 has 4 divisors (see below), whose sum is σ = 159709320. Its totient is φ = 154385560.

The previous prime is 157047433. The next prime is 157047463. The reversal of 157047439 is 934740751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157047439 - 2¹¹ = 157045391 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157047433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1330852 + ... + 1330969.

It is an arithmetic number, because the mean of its divisors is an integer number (39927330).

Almost surely, 2^157047439 is an apocalyptic number.

157047439 is a deficient number, since it is larger than the sum of its proper divisors (2661881).

157047439 is an equidigital number, since it uses as much as digits as its factorization.

157047439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661880.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 157047439 is about 12531.8569653503. The cubic root of 157047439 is about 539.5234009267.

The spelling of 157047439 in words is "one hundred fifty-seven million, forty-seven thousand, four hundred thirty-nine".