40999140 has 144 divisors (see below), whose sum is σ = 153124608. Its totient is φ = 8646912.

The previous prime is 40999129. The next prime is 40999171. The reversal of 40999140 is 4199904.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 40999095 and 40999104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15129 + ... + 17631.

Almost surely, 2^40999140 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 40999140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76562304).

40999140 is an abundant number, since it is smaller than the sum of its proper divisors (112125468).

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

40999140 is a wasteful number, since it uses less digits than its factorization.

40999140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538 (or 2533 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 40999140 is about 6403.0570823631. The cubic root of 40999140 is about 344.8193130728.

The spelling of 40999140 in words is "forty million, nine hundred ninety-nine thousand, one hundred forty".