612939149 has 2 divisors, whose sum is σ = 612939150. Its totient is φ = 612939148.

The previous prime is 612939143. The next prime is 612939191. The reversal of 612939149 is 941939216.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 599907049 + 13032100 = 24493^2 + 3610^2 .

It is a cyclic number.

It is not a de Polignac number, because 612939149 - 2⁴ = 612939133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612939143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306469574 + 306469575.

It is an arithmetic number, because the mean of its divisors is an integer number (306469575).

Almost surely, 2^612939149 is an apocalyptic number.

It is an amenable number.

612939149 is a deficient number, since it is larger than the sum of its proper divisors (1).

612939149 is an equidigital number, since it uses as much as digits as its factorization.

612939149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 44.

The square root of 612939149 is about 24757.6079014108. The cubic root of 612939149 is about 849.4525420545.

The spelling of 612939149 in words is "six hundred twelve million, nine hundred thirty-nine thousand, one hundred forty-nine".