45199423 has 4 divisors (see below), whose sum is σ = 47578360. Its totient is φ = 42820488.

The previous prime is 45199409. The next prime is 45199433. The reversal of 45199423 is 32499154.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45199423 - 2⁹ = 45198911 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 (45199403) 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, 1189440 + ... + 1189477.

It is an arithmetic number, because the mean of its divisors is an integer number (11894590).

Almost surely, 2^45199423 is an apocalyptic number.

45199423 is a deficient number, since it is larger than the sum of its proper divisors (2378937).

45199423 is a wasteful number, since it uses less digits than its factorization.

45199423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378936.

The product of its digits is 38880, while the sum is 37.

The square root of 45199423 is about 6723.0516136647. The cubic root of 45199423 is about 356.2139831035.

The spelling of 45199423 in words is "forty-five million, one hundred ninety-nine thousand, four hundred twenty-three".