40989311 has 8 divisors (see below), whose sum is σ = 45667584. Its totient is φ = 36469720.

The previous prime is 40989307. The next prime is 40989313. The reversal of 40989311 is 11398904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40989311 - 2² = 40989307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40989313) 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, 39125 + ... + 40158.

It is an arithmetic number, because the mean of its divisors is an integer number (5708448).

Almost surely, 2^40989311 is an apocalyptic number.

40989311 is a deficient number, since it is larger than the sum of its proper divisors (4678273).

40989311 is a wasteful number, since it uses less digits than its factorization.

40989311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79341.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 40989311 is about 6402.2895123542. The cubic root of 40989311 is about 344.7917555849.

It can be divided in two parts, 409893 and 11, that added together give a palindrome (409904).

The spelling of 40989311 in words is "forty million, nine hundred eighty-nine thousand, three hundred eleven".