40289712 has 20 divisors (see below), whose sum is σ = 104081880. Its totient is φ = 13429888.

The previous prime is 40289701. The next prime is 40289719. The reversal of 40289712 is 21798204.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40289719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419637 + ... + 419732.

It is an arithmetic number, because the mean of its divisors is an integer number (5204094).

Almost surely, 2^40289712 is an apocalyptic number.

It is an amenable number.

40289712 is an abundant number, since it is smaller than the sum of its proper divisors (63792168).

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

40289712 is a wasteful number, since it uses less digits than its factorization.

40289712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839380 (or 839374 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 40289712 is about 6347.4177426730. The cubic root of 40289712 is about 342.8188715218.

The spelling of 40289712 in words is "forty million, two hundred eighty-nine thousand, seven hundred twelve".