45397949 has 2 divisors, whose sum is σ = 45397950. Its totient is φ = 45397948.

The previous prime is 45397943. The next prime is 45397951. The reversal of 45397949 is 94979354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29052100 + 16345849 = 5390^2 + 4043^2 .

It is a cyclic number.

It is not a de Polignac number, because 45397949 - 2²⁴ = 28620733 is a prime.

Together with 45397951, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45397897 and 45397906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45397943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22698974 + 22698975.

It is an arithmetic number, because the mean of its divisors is an integer number (22698975).

Almost surely, 2^45397949 is an apocalyptic number.

It is an amenable number.

45397949 is a deficient number, since it is larger than the sum of its proper divisors (1).

45397949 is an equidigital number, since it uses as much as digits as its factorization.

45397949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 50.

The square root of 45397949 is about 6737.8000118733. The cubic root of 45397949 is about 356.7347453048.

The spelling of 45397949 in words is "forty-five million, three hundred ninety-seven thousand, nine hundred forty-nine".