40869312 has 112 divisors (see below), whose sum is σ = 121383552. Its totient is φ = 12026880.

The previous prime is 40869299. The next prime is 40869317. The reversal of 40869312 is 21396804.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40869317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77883 + ... + 78405.

Almost surely, 2^40869312 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 40869312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60691776).

40869312 is an abundant number, since it is smaller than the sum of its proper divisors (80514240).

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

40869312 is a wasteful number, since it uses less digits than its factorization.

40869312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 40869312 is about 6392.9110739944. The cubic root of 40869312 is about 344.4549595896.

The spelling of 40869312 in words is "forty million, eight hundred sixty-nine thousand, three hundred twelve".