40989389 has 8 divisors (see below), whose sum is σ = 47108160. Its totient is φ = 34936416.

The previous prime is 40989371. The next prime is 40989401. The reversal of 40989389 is 98398904.

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 40989389 - 2²⁴ = 24212173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40989349) 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, 15104 + ... + 17609.

It is an arithmetic number, because the mean of its divisors is an integer number (5888520).

Almost surely, 2^40989389 is an apocalyptic number.

It is an amenable number.

40989389 is a deficient number, since it is larger than the sum of its proper divisors (6118771).

40989389 is a wasteful number, since it uses less digits than its factorization.

40989389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32899.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 40989389 is about 6402.2956039221. The cubic root of 40989389 is about 344.7919742903.

It can be divided in two parts, 409 and 89389, that added together give a palindrome (89798).

The spelling of 40989389 in words is "forty million, nine hundred eighty-nine thousand, three hundred eighty-nine".