157947789 has 8 divisors (see below), whose sum is σ = 211815072. Its totient is φ = 104689520.

The previous prime is 157947787. The next prime is 157947793. The reversal of 157947789 is 987749751.

157947789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 157947789 - 2¹ = 157947787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157947787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151647 + ... + 152684.

It is an arithmetic number, because the mean of its divisors is an integer number (26476884).

Almost surely, 2^157947789 is an apocalyptic number.

It is an amenable number.

157947789 is a deficient number, since it is larger than the sum of its proper divisors (53867283).

157947789 is a wasteful number, since it uses less digits than its factorization.

157947789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304507.

The product of its digits is 4445280, while the sum is 57.

The square root of 157947789 is about 12567.7280763072. The cubic root of 157947789 is about 540.5524627149.

The spelling of 157947789 in words is "one hundred fifty-seven million, nine hundred forty-seven thousand, seven hundred eighty-nine".