40379856 has 80 divisors (see below), whose sum is σ = 117516288. Its totient is φ = 11836800.

The previous prime is 40379851. The next prime is 40379863. The reversal of 40379856 is 65897304.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40379851) 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, 15135 + ... + 17601.

Almost surely, 2^40379856 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 40379856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58758144).

40379856 is an abundant number, since it is smaller than the sum of its proper divisors (77136432).

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

40379856 is a wasteful number, since it uses less digits than its factorization.

40379856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520 (or 2514 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 40379856 is about 6354.5146156099. The cubic root of 40379856 is about 343.0743548199.

The spelling of 40379856 in words is "forty million, three hundred seventy-nine thousand, eight hundred fifty-six".