7497949 has 4 divisors (see below), whose sum is σ = 7505820. Its totient is φ = 7490080.

The previous prime is 7497943. The next prime is 7497961. The reversal of 7497949 is 9497947.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9497947 = 431 ⋅22037.

It can be written as a sum of positive squares in 2 ways, for example, as 2502724 + 4995225 = 1582^2 + 2235^2 .

It is a cyclic number.

It is not a de Polignac number, because 7497949 - 2⁷ = 7497821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7497943) 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 in 3 ways as a sum of consecutive naturals, for example, 2272 + ... + 4489.

It is an arithmetic number, because the mean of its divisors is an integer number (1876455).

Almost surely, 2^7497949 is an apocalyptic number.

It is an amenable number.

7497949 is a deficient number, since it is larger than the sum of its proper divisors (7871).

7497949 is a wasteful number, since it uses less digits than its factorization.

7497949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7870.

The product of its digits is 571536, while the sum is 49.

The square root of 7497949 is about 2738.2383022666. The cubic root of 7497949 is about 195.7255373350.

The spelling of 7497949 in words is "seven million, four hundred ninety-seven thousand, nine hundred forty-nine".