1002097139 has 2 divisors, whose sum is σ = 1002097140. Its totient is φ = 1002097138.

The previous prime is 1002097133. The next prime is 1002097141. The reversal of 1002097139 is 9317902001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1002097139 - 2⁸ = 1002096883 is a prime.

Together with 1002097141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1002097133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501048569 + 501048570.

It is an arithmetic number, because the mean of its divisors is an integer number (501048570).

Almost surely, 2^1002097139 is an apocalyptic number.

1002097139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002097139 is an equidigital number, since it uses as much as digits as its factorization.

1002097139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 1002097139 is about 31655.9179143490. The cubic root of 1002097139 is about 1000.6985582361.

The spelling of 1002097139 in words is "one billion, two million, ninety-seven thousand, one hundred thirty-nine".