391200422 has 8 divisors (see below), whose sum is σ = 612313776. Its totient is φ = 187095832.

The previous prime is 391200409. The next prime is 391200427. The reversal of 391200422 is 224002193.

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

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391200427) 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, 4252133 + ... + 4252224.

It is an arithmetic number, because the mean of its divisors is an integer number (76539222).

Almost surely, 2^391200422 is an apocalyptic number.

391200422 is a deficient number, since it is larger than the sum of its proper divisors (221113354).

391200422 is a wasteful number, since it uses less digits than its factorization.

391200422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8504382.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 391200422 is about 19778.7871721195. The cubic root of 391200422 is about 731.3632011956.

The spelling of 391200422 in words is "three hundred ninety-one million, two hundred thousand, four hundred twenty-two".