391414143 has 4 divisors (see below), whose sum is σ = 521885528. Its totient is φ = 260942760.

The previous prime is 391414123. The next prime is 391414147. The reversal of 391414143 is 341414193.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341414193 = 3 ⋅113804731.

It is not a de Polignac number, because 391414143 - 2⁸ = 391413887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 391414143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391414147) 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, 65235688 + ... + 65235693.

It is an arithmetic number, because the mean of its divisors is an integer number (130471382).

Almost surely, 2^391414143 is an apocalyptic number.

391414143 is a deficient number, since it is larger than the sum of its proper divisors (130471385).

391414143 is a wasteful number, since it uses less digits than its factorization.

391414143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130471384.

The product of its digits is 5184, while the sum is 30.

The square root of 391414143 is about 19784.1892176556. The cubic root of 391414143 is about 731.4963633037.

The spelling of 391414143 in words is "three hundred ninety-one million, four hundred fourteen thousand, one hundred forty-three".