45440249 has 4 divisors (see below), whose sum is σ = 47415936. Its totient is φ = 43464564.

The previous prime is 45440243. The next prime is 45440261. The reversal of 45440249 is 94204454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94204454 = 2 ⋅47102227.

It is a cyclic number.

It is not a de Polignac number, because 45440249 - 2⁴ = 45440233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45440243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 987809 + ... + 987854.

It is an arithmetic number, because the mean of its divisors is an integer number (11853984).

Almost surely, 2^45440249 is an apocalyptic number.

It is an amenable number.

45440249 is a deficient number, since it is larger than the sum of its proper divisors (1975687).

45440249 is a wasteful number, since it uses less digits than its factorization.

45440249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975686.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 45440249 is about 6740.9382878053. The cubic root of 45440249 is about 356.8455079843.

The spelling of 45440249 in words is "forty-five million, four hundred forty thousand, two hundred forty-nine".