40869756 has 72 divisors (see below), whose sum is σ = 108055584. Its totient is φ = 13011840.

The previous prime is 40869739. The next prime is 40869757. The reversal of 40869756 is 65796804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40869757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81001 + ... + 81503.

It is an arithmetic number, because the mean of its divisors is an integer number (1500772).

Almost surely, 2^40869756 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 40869756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54027792).

40869756 is an abundant number, since it is smaller than the sum of its proper divisors (67185828).

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

40869756 is a wasteful number, since it uses less digits than its factorization.

40869756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 40869756 is about 6392.9457998641. The cubic root of 40869756 is about 344.4562069595.

The spelling of 40869756 in words is "forty million, eight hundred sixty-nine thousand, seven hundred fifty-six".