40979636 has 6 divisors (see below), whose sum is σ = 71714370. Its totient is φ = 20489816.

The previous prime is 40979633. The next prime is 40979641. The reversal of 40979636 is 63697904.

It can be written as a sum of positive squares in only one way, i.e., 33988900 + 6990736 = 5830^2 + 2644^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40979633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5122451 + ... + 5122458.

It is an arithmetic number, because the mean of its divisors is an integer number (11952395).

Almost surely, 2^40979636 is an apocalyptic number.

It is an amenable number.

40979636 is a deficient number, since it is larger than the sum of its proper divisors (30734734).

40979636 is a wasteful number, since it uses less digits than its factorization.

40979636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10244913 (or 10244911 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 40979636 is about 6401.5338786888. The cubic root of 40979636 is about 344.7646255629.

The spelling of 40979636 in words is "forty million, nine hundred seventy-nine thousand, six hundred thirty-six".