46539139 has 2 divisors, whose sum is σ = 46539140. Its totient is φ = 46539138.

The previous prime is 46539133. The next prime is 46539193. The reversal of 46539139 is 93193564.

Together with next prime (46539193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 46539139 - 2³ = 46539131 is a prime.

It is a super-2 number, since 2×46539139² = 4331782917722642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (46539131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23269569 + 23269570.

It is an arithmetic number, because the mean of its divisors is an integer number (23269570).

Almost surely, 2^46539139 is an apocalyptic number.

46539139 is a deficient number, since it is larger than the sum of its proper divisors (1).

46539139 is an equidigital number, since it uses as much as digits as its factorization.

46539139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 40.

The square root of 46539139 is about 6821.9600555852. The cubic root of 46539139 is about 359.6991802863.

The spelling of 46539139 in words is "forty-six million, five hundred thirty-nine thousand, one hundred thirty-nine".