7945749 has 32 divisors (see below), whose sum is σ = 14250240. Its totient is φ = 4271616.

The previous prime is 7945733. The next prime is 7945757. The reversal of 7945749 is 9475497.

7945749 is a `hidden beast` number, since 79 + 4 + 574 + 9 = 666.

7945749 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7945749 - 2⁴ = 7945733 is a prime.

7945749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7945709) 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 31 ways as a sum of consecutive naturals, for example, 1977 + ... + 4449.

It is an arithmetic number, because the mean of its divisors is an integer number (445320).

Almost surely, 2^7945749 is an apocalyptic number.

It is an amenable number.

7945749 is a deficient number, since it is larger than the sum of its proper divisors (6304491).

7945749 is a wasteful number, since it uses less digits than its factorization.

7945749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506 (or 2500 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 7945749 is about 2818.8204980098. The cubic root of 7945749 is about 199.5468825314.

The spelling of 7945749 in words is "seven million, nine hundred forty-five thousand, seven hundred forty-nine".