415864139 has 2 divisors, whose sum is σ = 415864140. Its totient is φ = 415864138.

The previous prime is 415864093. The next prime is 415864157. The reversal of 415864139 is 931468514.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 415864139 - 2²⁰ = 414815563 is a prime.

It is a super-2 number, since 2×415864139² = 345885964212422642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 415864096 and 415864105.

It is not a weakly prime, because it can be changed into another prime (415864199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207932069 + 207932070.

It is an arithmetic number, because the mean of its divisors is an integer number (207932070).

Almost surely, 2^415864139 is an apocalyptic number.

415864139 is a deficient number, since it is larger than the sum of its proper divisors (1).

415864139 is an equidigital number, since it uses as much as digits as its factorization.

415864139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 415864139 is about 20392.7472156157. The cubic root of 415864139 is about 746.4209560569.

The spelling of 415864139 in words is "four hundred fifteen million, eight hundred sixty-four thousand, one hundred thirty-nine".