415728139 has 2 divisors, whose sum is σ = 415728140. Its totient is φ = 415728138.

The previous prime is 415728121. The next prime is 415728179. The reversal of 415728139 is 931827514.

It is an a-pointer prime, because the next prime (415728179) can be obtained adding 415728139 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 415728139 - 2²³ = 407339531 is a prime.

It is not a weakly prime, because it can be changed into another prime (415728119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207864069 + 207864070.

It is an arithmetic number, because the mean of its divisors is an integer number (207864070).

Almost surely, 2^415728139 is an apocalyptic number.

415728139 is a deficient number, since it is larger than the sum of its proper divisors (1).

415728139 is an equidigital number, since it uses as much as digits as its factorization.

415728139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 415728139 is about 20389.4124240989. The cubic root of 415728139 is about 746.3395798665.

The spelling of 415728139 in words is "four hundred fifteen million, seven hundred twenty-eight thousand, one hundred thirty-nine".