1390503749 has 2 divisors, whose sum is σ = 1390503750. Its totient is φ = 1390503748.

The previous prime is 1390503743. The next prime is 1390503817. The reversal of 1390503749 is 9473050931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 725224900 + 665278849 = 26930^2 + 25793^2 .

It is a cyclic number.

It is not a de Polignac number, because 1390503749 - 2¹⁶ = 1390438213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1390503743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695251874 + 695251875.

It is an arithmetic number, because the mean of its divisors is an integer number (695251875).

Almost surely, 2^1390503749 is an apocalyptic number.

It is an amenable number.

1390503749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390503749 is an equidigital number, since it uses as much as digits as its factorization.

1390503749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 1390503749 is about 37289.4589528998. The cubic root of 1390503749 is about 1116.1538322157.

The spelling of 1390503749 in words is "one billion, three hundred ninety million, five hundred three thousand, seven hundred forty-nine".