40989307 has 2 divisors, whose sum is σ = 40989308. Its totient is φ = 40989306.

The previous prime is 40989283. The next prime is 40989313. The reversal of 40989307 is 70398904.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40989307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40989307.

It is not a weakly prime, because it can be changed into another prime (40989367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20494653 + 20494654.

It is an arithmetic number, because the mean of its divisors is an integer number (20494654).

Almost surely, 2^40989307 is an apocalyptic number.

40989307 is a deficient number, since it is larger than the sum of its proper divisors (1).

40989307 is an equidigital number, since it uses as much as digits as its factorization.

40989307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 40989307 is about 6402.2891999659. The cubic root of 40989307 is about 344.7917443693.

The spelling of 40989307 in words is "forty million, nine hundred eighty-nine thousand, three hundred seven".