152439649 has 2 divisors, whose sum is σ = 152439650. Its totient is φ = 152439648.

The previous prime is 152439643. The next prime is 152439737. The reversal of 152439649 is 946934251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152349649 + 90000 = 12343^2 + 300^2 .

It is an emirp because it is prime and its reverse (946934251) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152439649 is a prime.

It is not a weakly prime, because it can be changed into another prime (152439643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76219824 + 76219825.

It is an arithmetic number, because the mean of its divisors is an integer number (76219825).

Almost surely, 2^152439649 is an apocalyptic number.

It is an amenable number.

152439649 is a deficient number, since it is larger than the sum of its proper divisors (1).

152439649 is an equidigital number, since it uses as much as digits as its factorization.

152439649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 43.

The square root of 152439649 is about 12346.6452528612. The cubic root of 152439649 is about 534.1943783571.

The spelling of 152439649 in words is "one hundred fifty-two million, four hundred thirty-nine thousand, six hundred forty-nine".