7249779 has 6 divisors (see below), whose sum is σ = 10471916. Its totient is φ = 4833180.

The previous prime is 7249763. The next prime is 7249829. The reversal of 7249779 is 9779427.

It is a happy number.

It is not a de Polignac number, because 7249779 - 2⁴ = 7249763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7249709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 402757 + ... + 402774.

Almost surely, 2^7249779 is an apocalyptic number.

7249779 is a deficient number, since it is larger than the sum of its proper divisors (3222137).

7249779 is a wasteful number, since it uses less digits than its factorization.

7249779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805537 (or 805534 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 7249779 is about 2692.5413645848. The cubic root of 7249779 is about 193.5418654281.

The spelling of 7249779 in words is "seven million, two hundred forty-nine thousand, seven hundred seventy-nine".