40989418 has 8 divisors (see below), whose sum is σ = 61638660. Its totient is φ = 20443200.

The previous prime is 40989401. The next prime is 40989439. The reversal of 40989418 is 81498904.

It can be written as a sum of positive squares in 2 ways, for example, as 26450449 + 14538969 = 5143^2 + 3813^2 .

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

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24753 + ... + 26356.

Almost surely, 2^40989418 is an apocalyptic number.

40989418 is a deficient number, since it is larger than the sum of its proper divisors (20649242).

40989418 is a wasteful number, since it uses less digits than its factorization.

40989418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51512.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 40989418 is about 6402.2978687343. The cubic root of 40989418 is about 344.7920556037.

The spelling of 40989418 in words is "forty million, nine hundred eighty-nine thousand, four hundred eighteen".