45990729 has 12 divisors (see below), whose sum is σ = 70338996. Its totient is φ = 28856832.

The previous prime is 45990713. The next prime is 45990739. The reversal of 45990729 is 92709954.

It can be written as a sum of positive squares in 2 ways, for example, as 42575625 + 3415104 = 6525^2 + 1848^2 .

It is not a de Polignac number, because 45990729 - 2⁴ = 45990713 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45990739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150144 + ... + 150449.

It is an arithmetic number, because the mean of its divisors is an integer number (5861583).

Almost surely, 2^45990729 is an apocalyptic number.

It is an amenable number.

45990729 is a deficient number, since it is larger than the sum of its proper divisors (24348267).

45990729 is a wasteful number, since it uses less digits than its factorization.

45990729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300616 (or 300613 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 45990729 is about 6781.6464814970. The cubic root of 45990729 is about 358.2807141533.

The spelling of 45990729 in words is "forty-five million, nine hundred ninety thousand, seven hundred twenty-nine".