7949899 has 2 divisors, whose sum is σ = 7949900. Its totient is φ = 7949898.

The previous prime is 7949891. The next prime is 7949933. The reversal of 7949899 is 9989497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7949899 - 2³ = 7949891 is a prime.

It is a super-2 number, since 2×7949899² = 126401788220402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7949891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3974949 + 3974950.

It is an arithmetic number, because the mean of its divisors is an integer number (3974950).

Almost surely, 2^7949899 is an apocalyptic number.

7949899 is a deficient number, since it is larger than the sum of its proper divisors (1).

7949899 is an equidigital number, since it uses as much as digits as its factorization.

7949899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 55.

The square root of 7949899 is about 2819.5565254132. The cubic root of 7949899 is about 199.5816170555.

It can be divided in two parts, 79498 and 99, that added together give a palindrome (79597).

The spelling of 7949899 in words is "seven million, nine hundred forty-nine thousand, eight hundred ninety-nine".