7249919 has 2 divisors, whose sum is σ = 7249920. Its totient is φ = 7249918.

The previous prime is 7249901. The next prime is 7249927. The reversal of 7249919 is 9199427.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9199427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7249919 - 2⁸ = 7249663 is a prime.

It is a super-2 number, since 2×7249919² = 105122651013122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7249019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3624959 + 3624960.

It is an arithmetic number, because the mean of its divisors is an integer number (3624960).

Almost surely, 2^7249919 is an apocalyptic number.

7249919 is a deficient number, since it is larger than the sum of its proper divisors (1).

7249919 is an equidigital number, since it uses as much as digits as its factorization.

7249919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 41.

The square root of 7249919 is about 2692.5673622028. The cubic root of 7249919 is about 193.5431112448.

The spelling of 7249919 in words is "seven million, two hundred forty-nine thousand, nine hundred nineteen".