45439149 has 32 divisors (see below), whose sum is σ = 72024064. Its totient is φ = 24935040.

The previous prime is 45439133. The next prime is 45439151. The reversal of 45439149 is 94193454.

It is not a de Polignac number, because 45439149 - 2⁴ = 45439133 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45439109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145017 + ... + 145329.

It is an arithmetic number, because the mean of its divisors is an integer number (2250752).

Almost surely, 2^45439149 is an apocalyptic number.

It is an amenable number.

45439149 is a deficient number, since it is larger than the sum of its proper divisors (26584915).

45439149 is a wasteful number, since it uses less digits than its factorization.

45439149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577.

The product of its digits is 77760, while the sum is 39.

The square root of 45439149 is about 6740.8566962961. The cubic root of 45439149 is about 356.8426285017.

The spelling of 45439149 in words is "forty-five million, four hundred thirty-nine thousand, one hundred forty-nine".