40455900 has 108 divisors (see below), whose sum is σ = 128637600. Its totient is φ = 10632960.

The previous prime is 40455881. The next prime is 40455913. The reversal of 40455900 is 955404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70816 + ... + 71384.

Almost surely, 2^40455900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40455900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64318800).

40455900 is an abundant number, since it is smaller than the sum of its proper divisors (88181700).

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

40455900 is a wasteful number, since it uses less digits than its factorization.

40455900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 40455900 is about 6360.4952637354. The cubic root of 40455900 is about 343.2895808345.

The spelling of 40455900 in words is "forty million, four hundred fifty-five thousand, nine hundred".