45919447 has 8 divisors (see below), whose sum is σ = 55241600. Its totient is φ = 37287864.

The previous prime is 45919439. The next prime is 45919453. The reversal of 45919447 is 74491954.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45919447 - 2³ = 45919439 is a prime.

It is a super-2 number, since 2×45919447² = 4217191225571618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45919427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172497 + ... + 172762.

It is an arithmetic number, because the mean of its divisors is an integer number (6905200).

Almost surely, 2^45919447 is an apocalyptic number.

45919447 is a deficient number, since it is larger than the sum of its proper divisors (9322153).

45919447 is a wasteful number, since it uses less digits than its factorization.

45919447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345285.

The product of its digits is 181440, while the sum is 43.

The square root of 45919447 is about 6776.3889351188. The cubic root of 45919447 is about 358.0955161633.

The spelling of 45919447 in words is "forty-five million, nine hundred nineteen thousand, four hundred forty-seven".