40999680 has 108 divisors (see below), whose sum is σ = 141894480. Its totient is φ = 10930176.

The previous prime is 40999667. The next prime is 40999681. The reversal of 40999680 is 8699904.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40999681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9741 + ... + 13299.

Almost surely, 2^40999680 is an apocalyptic number.

40999680 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 40999680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70947240).

40999680 is an abundant number, since it is smaller than the sum of its proper divisors (100894800).

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

40999680 is a wasteful number, since it uses less digits than its factorization.

40999680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586 (or 3569 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 40999680 is about 6403.0992495822. The cubic root of 40999680 is about 344.8208269388.

The spelling of 40999680 in words is "forty million, nine hundred ninety-nine thousand, six hundred eighty".