45479188 has 18 divisors (see below), whose sum is σ = 83203274. Its totient is φ = 21749904.

The previous prime is 45479183. The next prime is 45479191. The reversal of 45479188 is 88197454.

It can be written as a sum of positive squares in only one way, i.e., 29463184 + 16016004 = 5428^2 + 4002^2 .

It is a super-2 number, since 2×45479188² = 4136713082278688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45479183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8631 + ... + 12862.

Almost surely, 2^45479188 is an apocalyptic number.

It is an amenable number.

45479188 is a deficient number, since it is larger than the sum of its proper divisors (37724086).

45479188 is a wasteful number, since it uses less digits than its factorization.

45479188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21543 (or 21518 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 45479188 is about 6743.8259170889. The cubic root of 45479188 is about 356.9474091283.

The spelling of 45479188 in words is "forty-five million, four hundred seventy-nine thousand, one hundred eighty-eight".