40349312 has 64 divisors (see below), whose sum is σ = 86659200. Its totient is φ = 18653184.

The previous prime is 40349311. The next prime is 40349339. The reversal of 40349312 is 21394304.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40349311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114128 + ... + 114480.

It is an arithmetic number, because the mean of its divisors is an integer number (1354050).

Almost surely, 2^40349312 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 40349312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43329600).

40349312 is an abundant number, since it is smaller than the sum of its proper divisors (46309888).

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

40349312 is a wasteful number, since it uses less digits than its factorization.

40349312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 40349312 is about 6352.1108302674. The cubic root of 40349312 is about 342.9878306024.

The spelling of 40349312 in words is "forty million, three hundred forty-nine thousand, three hundred twelve".