1007999939 has 2 divisors, whose sum is σ = 1007999940. Its totient is φ = 1007999938.

The previous prime is 1007999903. The next prime is 1007999963. The reversal of 1007999939 is 9399997001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1007999939 - 2¹² = 1007995843 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1007999969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503999969 + 503999970.

It is an arithmetic number, because the mean of its divisors is an integer number (503999970).

Almost surely, 2^1007999939 is an apocalyptic number.

1007999939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1007999939 is an equidigital number, since it uses as much as digits as its factorization.

1007999939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1240029, while the sum is 56.

The square root of 1007999939 is about 31749.0147721154. The cubic root of 1007999939 is about 1002.6595667673.

The spelling of 1007999939 in words is "one billion, seven million, nine hundred ninety-nine thousand, nine hundred thirty-nine".