40966638 has 24 divisors (see below), whose sum is σ = 82756152. Its totient is φ = 13519584.

The previous prime is 40966633. The next prime is 40966643. The reversal of 40966638 is 83666904.

It is an interprime number because it is at equal distance from previous prime (40966633) and next prime (40966643).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40966638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40966633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147756 + ... + 148032.

It is an arithmetic number, because the mean of its divisors is an integer number (3448173).

Almost surely, 2^40966638 is an apocalyptic number.

40966638 is an abundant number, since it is smaller than the sum of its proper divisors (41789514).

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

40966638 is a wasteful number, since it uses less digits than its factorization.

40966638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 40966638 is about 6400.5185727408. The cubic root of 40966638 is about 344.7281706720.

The spelling of 40966638 in words is "forty million, nine hundred sixty-six thousand, six hundred thirty-eight".