939620249 has 2 divisors, whose sum is σ = 939620250. Its totient is φ = 939620248.

The previous prime is 939620203. The next prime is 939620251. The reversal of 939620249 is 942026939.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 748296025 + 191324224 = 27355^2 + 13832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-939620249 is a prime.

Together with 939620251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (939620299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469810124 + 469810125.

It is an arithmetic number, because the mean of its divisors is an integer number (469810125).

Almost surely, 2^939620249 is an apocalyptic number.

It is an amenable number.

939620249 is a deficient number, since it is larger than the sum of its proper divisors (1).

939620249 is an equidigital number, since it uses as much as digits as its factorization.

939620249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 939620249 is about 30653.2257519498. The cubic root of 939620249 is about 979.4541764779.

The spelling of 939620249 in words is "nine hundred thirty-nine million, six hundred twenty thousand, two hundred forty-nine".