394172337 has 16 divisors (see below), whose sum is σ = 566818560. Its totient is φ = 242212992.

The previous prime is 394172329. The next prime is 394172341. The reversal of 394172337 is 733271493.

It is not a de Polignac number, because 394172337 - 2³ = 394172329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 394172295 and 394172304.

It is not an unprimeable number, because it can be changed into a prime (394172377) 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 15 ways as a sum of consecutive naturals, for example, 21013 + ... + 35069.

It is an arithmetic number, because the mean of its divisors is an integer number (35426160).

Almost surely, 2^394172337 is an apocalyptic number.

It is an amenable number.

394172337 is a deficient number, since it is larger than the sum of its proper divisors (172646223).

394172337 is a wasteful number, since it uses less digits than its factorization.

394172337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14792.

The product of its digits is 95256, while the sum is 39.

The square root of 394172337 is about 19853.7738729945. The cubic root of 394172337 is about 733.2105648248.

The spelling of 394172337 in words is "three hundred ninety-four million, one hundred seventy-two thousand, three hundred thirty-seven".