45117949 has 8 divisors (see below), whose sum is σ = 48582720. Its totient is φ = 41743296.

The previous prime is 45117931. The next prime is 45117959. The reversal of 45117949 is 94971154.

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

It is not a de Polignac number, because 45117949 - 2¹⁵ = 45085181 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 (45117929) 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, 21489 + ... + 23494.

It is an arithmetic number, because the mean of its divisors is an integer number (6072840).

Almost surely, 2^45117949 is an apocalyptic number.

It is an amenable number.

45117949 is a deficient number, since it is larger than the sum of its proper divisors (3464771).

45117949 is a wasteful number, since it uses less digits than its factorization.

45117949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45059.

The product of its digits is 45360, while the sum is 40.

The square root of 45117949 is about 6716.9895786729. The cubic root of 45117949 is about 355.9998237806. Note that the first 3 decimals are identical.

The spelling of 45117949 in words is "forty-five million, one hundred seventeen thousand, nine hundred forty-nine".