393140157 has 8 divisors (see below), whose sum is σ = 524463360. Its totient is φ = 261955200.

The previous prime is 393140141. The next prime is 393140161. The reversal of 393140157 is 751041393.

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

It is not a de Polignac number, because 393140157 - 2⁴ = 393140141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393140117) 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, 27732 + ... + 39437.

It is an arithmetic number, because the mean of its divisors is an integer number (65557920).

Almost surely, 2^393140157 is an apocalyptic number.

It is an amenable number.

393140157 is a deficient number, since it is larger than the sum of its proper divisors (131323203).

393140157 is a wasteful number, since it uses less digits than its factorization.

393140157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69123.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 393140157 is about 19827.7622791882. The cubic root of 393140157 is about 732.5700101209.

The spelling of 393140157 in words is "three hundred ninety-three million, one hundred forty thousand, one hundred fifty-seven".