1490431099 has 2 divisors, whose sum is σ = 1490431100. Its totient is φ = 1490431098.

The previous prime is 1490431091. The next prime is 1490431171. The reversal of 1490431099 is 9901340941.

It is a weak prime.

It is an emirp because it is prime and its reverse (9901340941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1490431099 - 2³ = 1490431091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1490431091) 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, 745215549 + 745215550.

It is an arithmetic number, because the mean of its divisors is an integer number (745215550).

Almost surely, 2^1490431099 is an apocalyptic number.

1490431099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490431099 is an equidigital number, since it uses as much as digits as its factorization.

1490431099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 1490431099 is about 38606.1018363678. The cubic root of 1490431099 is about 1142.2749020503.

The spelling of 1490431099 in words is "one billion, four hundred ninety million, four hundred thirty-one thousand, ninety-nine".