749921339 has 2 divisors, whose sum is σ = 749921340. Its totient is φ = 749921338.

The previous prime is 749921303. The next prime is 749921363. The reversal of 749921339 is 933129947.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 749921339 - 2⁸ = 749921083 is a prime.

It is a Sophie Germain prime.

It is equal to p_38699318 and since 749921339 and 38699318 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 749921293 and 749921302.

It is not a weakly prime, because it can be changed into another prime (749921369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374960669 + 374960670.

It is an arithmetic number, because the mean of its divisors is an integer number (374960670).

Almost surely, 2^749921339 is an apocalyptic number.

749921339 is a deficient number, since it is larger than the sum of its proper divisors (1).

749921339 is an equidigital number, since it uses as much as digits as its factorization.

749921339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 47.

The square root of 749921339 is about 27384.6916907969. The cubic root of 749921339 is about 908.5285316338.

The spelling of 749921339 in words is "seven hundred forty-nine million, nine hundred twenty-one thousand, three hundred thirty-nine".