40947312 has 40 divisors (see below), whose sum is σ = 120893056. Its totient is φ = 11699136.

The previous prime is 40947253. The next prime is 40947317. The reversal of 40947312 is 21374904.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40947312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40947317) 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, 60598 + ... + 61269.

Almost surely, 2^40947312 is an apocalyptic number.

40947312 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40947312 is an abundant number, since it is smaller than the sum of its proper divisors (79945744).

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

40947312 is a wasteful number, since it uses less digits than its factorization.

40947312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121885 (or 121879 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 40947312 is about 6399.0086732243. The cubic root of 40947312 is about 344.6739536729.

The spelling of 40947312 in words is "forty million, nine hundred forty-seven thousand, three hundred twelve".