391448342 has 8 divisors (see below), whose sum is σ = 587288232. Its totient is φ = 195685600.

The previous prime is 391448333. The next prime is 391448363. The reversal of 391448342 is 243844193.

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

It is a junction number, because it is equal to n+sod(n) for n = 391448296 and 391448305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4259 + ... + 28302.

It is an arithmetic number, because the mean of its divisors is an integer number (73411029).

Almost surely, 2^391448342 is an apocalyptic number.

391448342 is a deficient number, since it is larger than the sum of its proper divisors (195839890).

391448342 is a wasteful number, since it uses less digits than its factorization.

391448342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38574.

The product of its digits is 82944, while the sum is 38.

The square root of 391448342 is about 19785.0535000540. The cubic root of 391448342 is about 731.5176670098.

The spelling of 391448342 in words is "three hundred ninety-one million, four hundred forty-eight thousand, three hundred forty-two".