46981439 has 2 divisors, whose sum is σ = 46981440. Its totient is φ = 46981438.

The previous prime is 46981397. The next prime is 46981469. The reversal of 46981439 is 93418964.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-46981439 is a prime.

It is a super-2 number, since 2×46981439² = 4414511221021442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 46981439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46981469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23490719 + 23490720.

It is an arithmetic number, because the mean of its divisors is an integer number (23490720).

Almost surely, 2^46981439 is an apocalyptic number.

46981439 is a deficient number, since it is larger than the sum of its proper divisors (1).

46981439 is an equidigital number, since it uses as much as digits as its factorization.

46981439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 46981439 is about 6854.3007666720. The cubic root of 46981439 is about 360.8350957866.

The spelling of 46981439 in words is "forty-six million, nine hundred eighty-one thousand, four hundred thirty-nine".