45099940 has 24 divisors (see below), whose sum is σ = 95397120. Its totient is φ = 17909088.

The previous prime is 45099919. The next prime is 45099953. The reversal of 45099940 is 4999054.

It is a junction number, because it is equal to n+sod(n) for n = 45099893 and 45099902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5332 + ... + 10891.

It is an arithmetic number, because the mean of its divisors is an integer number (3974880).

Almost surely, 2^45099940 is an apocalyptic number.

It is an amenable number.

45099940 is an abundant number, since it is smaller than the sum of its proper divisors (50297180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45099940 is a wasteful number, since it uses less digits than its factorization.

45099940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16371 (or 16369 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 45099940 is about 6715.6488889757. The cubic root of 45099940 is about 355.9524512516.

The spelling of 45099940 in words is "forty-five million, ninety-nine thousand, nine hundred forty".