45442949 has 2 divisors, whose sum is σ = 45442950. Its totient is φ = 45442948.

The previous prime is 45442939. The next prime is 45442967. The reversal of 45442949 is 94924454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32982049 + 12460900 = 5743^2 + 3530^2 .

It is a cyclic number.

It is not a de Polignac number, because 45442949 - 2⁸ = 45442693 is a prime.

It is a super-2 number, since 2×45442949² = 4130123227633202, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45442939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22721474 + 22721475.

It is an arithmetic number, because the mean of its divisors is an integer number (22721475).

Almost surely, 2^45442949 is an apocalyptic number.

It is an amenable number.

45442949 is a deficient number, since it is larger than the sum of its proper divisors (1).

45442949 is an equidigital number, since it uses as much as digits as its factorization.

45442949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 41.

The square root of 45442949 is about 6741.1385536866. The cubic root of 45442949 is about 356.8525756084.

The spelling of 45442949 in words is "forty-five million, four hundred forty-two thousand, nine hundred forty-nine".