45149779 has 2 divisors, whose sum is σ = 45149780. Its totient is φ = 45149778.

The previous prime is 45149777. The next prime is 45149791. The reversal of 45149779 is 97794154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45149779 - 2¹ = 45149777 is a prime.

Together with 45149777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45149771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22574889 + 22574890.

It is an arithmetic number, because the mean of its divisors is an integer number (22574890).

Almost surely, 2^45149779 is an apocalyptic number.

45149779 is a deficient number, since it is larger than the sum of its proper divisors (1).

45149779 is an equidigital number, since it uses as much as digits as its factorization.

45149779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 45149779 is about 6719.3585259309. The cubic root of 45149779 is about 356.0835215177.

The spelling of 45149779 in words is "forty-five million, one hundred forty-nine thousand, seven hundred seventy-nine".