391428114 has 32 divisors (see below), whose sum is σ = 976029696. Its totient is φ = 101669520.

The previous prime is 391428073. The next prime is 391428151. The reversal of 391428114 is 411824193.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423162 + ... + 424085.

It is an arithmetic number, because the mean of its divisors is an integer number (30500928).

Almost surely, 2^391428114 is an apocalyptic number.

391428114 is an abundant number, since it is smaller than the sum of its proper divisors (584601582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

391428114 is a wasteful number, since it uses less digits than its factorization.

391428114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847270.

The product of its digits is 6912, while the sum is 33.

The square root of 391428114 is about 19784.5422994822. The cubic root of 391428114 is about 731.5050664589.

The spelling of 391428114 in words is "three hundred ninety-one million, four hundred twenty-eight thousand, one hundred fourteen".