7489931 has 2 divisors, whose sum is σ = 7489932. Its totient is φ = 7489930.

The previous prime is 7489919. The next prime is 7489939. The reversal of 7489931 is 1399847.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1399847) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7489931 is a prime.

It is a super-2 number, since 2×7489931² = 112198132769522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7489939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3744965 + 3744966.

It is an arithmetic number, because the mean of its divisors is an integer number (3744966).

Almost surely, 2^7489931 is an apocalyptic number.

7489931 is a deficient number, since it is larger than the sum of its proper divisors (1).

7489931 is an equidigital number, since it uses as much as digits as its factorization.

7489931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 7489931 is about 2736.7738306261. The cubic root of 7489931 is about 195.6557454900.

The spelling of 7489931 in words is "seven million, four hundred eighty-nine thousand, nine hundred thirty-one".