1249036739 has 2 divisors, whose sum is σ = 1249036740. Its totient is φ = 1249036738.

The previous prime is 1249036729. The next prime is 1249036741. The reversal of 1249036739 is 9376309421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1249036739 - 2¹⁶ = 1248971203 is a prime.

Together with 1249036741, it forms a pair of twin primes.

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 1249036739.

It is not a weakly prime, because it can be changed into another prime (1249036709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624518369 + 624518370.

It is an arithmetic number, because the mean of its divisors is an integer number (624518370).

Almost surely, 2^1249036739 is an apocalyptic number.

1249036739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249036739 is an equidigital number, since it uses as much as digits as its factorization.

1249036739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 1249036739 is about 35341.7138661950. The cubic root of 1249036739 is about 1076.9405695200.

The spelling of 1249036739 in words is "one billion, two hundred forty-nine million, thirty-six thousand, seven hundred thirty-nine".