40094040 has 128 divisors (see below), whose sum is σ = 139968000. Its totient is φ = 8997888.

The previous prime is 40094039. The next prime is 40094053. The reversal of 40094040 is 4049004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 40093998 and 40094016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49156 + ... + 49964.

It is an arithmetic number, because the mean of its divisors is an integer number (1093500).

Almost surely, 2^40094040 is an apocalyptic number.

40094040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40094040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69984000).

40094040 is an abundant number, since it is smaller than the sum of its proper divisors (99873960).

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

40094040 is a wasteful number, since it uses less digits than its factorization.

40094040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40094040 is about 6331.9854706087. The cubic root of 40094040 is about 342.2629898086.

The spelling of 40094040 in words is "forty million, ninety-four thousand, forty".