45043949 has 4 divisors (see below), whose sum is σ = 45062880. Its totient is φ = 45025020.

The previous prime is 45043937. The next prime is 45043951. The reversal of 45043949 is 94934054.

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: 94934054 = 2 ⋅47467027.

It is a cyclic number.

It is not a de Polignac number, because 45043949 - 2²⁰ = 43995373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45043969) 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, 5279 + ... + 10860.

It is an arithmetic number, because the mean of its divisors is an integer number (11265720).

Almost surely, 2^45043949 is an apocalyptic number.

It is an amenable number.

45043949 is a deficient number, since it is larger than the sum of its proper divisors (18931).

45043949 is a wasteful number, since it uses less digits than its factorization.

45043949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18930.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 45043949 is about 6711.4788981267. The cubic root of 45043949 is about 355.8050867758.

The spelling of 45043949 in words is "forty-five million, forty-three thousand, nine hundred forty-nine".