1490139769 has 2 divisors, whose sum is σ = 1490139770. Its totient is φ = 1490139768.

The previous prime is 1490139731. The next prime is 1490139779. The reversal of 1490139769 is 9679310941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1371591225 + 118548544 = 37035^2 + 10888^2 .

It is a cyclic number.

It is not a de Polignac number, because 1490139769 - 2⁹ = 1490139257 is a prime.

It is a super-2 number, since 2×1490139769² = 4441033062310746722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1490139779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745069884 + 745069885.

It is an arithmetic number, because the mean of its divisors is an integer number (745069885).

Almost surely, 2^1490139769 is an apocalyptic number.

It is an amenable number.

1490139769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490139769 is an equidigital number, since it uses as much as digits as its factorization.

1490139769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 1490139769 is about 38602.3285437550. The cubic root of 1490139769 is about 1142.2004715422.

The spelling of 1490139769 in words is "one billion, four hundred ninety million, one hundred thirty-nine thousand, seven hundred sixty-nine".