45947749 has 2 divisors, whose sum is σ = 45947750. Its totient is φ = 45947748.

The previous prime is 45947731. The next prime is 45947771. The reversal of 45947749 is 94774954.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36602500 + 9345249 = 6050^2 + 3057^2 .

It is a cyclic number.

It is not a de Polignac number, because 45947749 - 2²⁵ = 12393317 is a prime.

It is a super-2 number, since 2×45947749² = 4222391276334002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45947849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22973874 + 22973875.

It is an arithmetic number, because the mean of its divisors is an integer number (22973875).

Almost surely, 2^45947749 is an apocalyptic number.

It is an amenable number.

45947749 is a deficient number, since it is larger than the sum of its proper divisors (1).

45947749 is an equidigital number, since it uses as much as digits as its factorization.

45947749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 49.

The square root of 45947749 is about 6778.4768938162. The cubic root of 45947749 is about 358.1690706049.

The spelling of 45947749 in words is "forty-five million, nine hundred forty-seven thousand, seven hundred forty-nine".