45009493 has 4 divisors (see below), whose sum is σ = 45032128. Its totient is φ = 44986860.

The previous prime is 45009487. The next prime is 45009509. The reversal of 45009493 is 39490054.

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.

It is a cyclic number.

It is not a de Polignac number, because 45009493 - 2²⁵ = 11455061 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 (45009403) 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, 8013 + ... + 12418.

It is an arithmetic number, because the mean of its divisors is an integer number (11258032).

Almost surely, 2^45009493 is an apocalyptic number.

It is an amenable number.

45009493 is a deficient number, since it is larger than the sum of its proper divisors (22635).

45009493 is a wasteful number, since it uses less digits than its factorization.

45009493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22634.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 45009493 is about 6708.9114616307. The cubic root of 45009493 is about 355.7143402372.

The spelling of 45009493 in words is "forty-five million, nine thousand, four hundred ninety-three".