40250989 has 8 divisors (see below), whose sum is σ = 43356672. Its totient is φ = 37258320.

The previous prime is 40250981. The next prime is 40251007. The reversal of 40250989 is 98905204.

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 40250989 - 2³ = 40250981 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 (40250981) 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, 27514 + ... + 28939.

It is an arithmetic number, because the mean of its divisors is an integer number (5419584).

Almost surely, 2^40250989 is an apocalyptic number.

It is an amenable number.

40250989 is a deficient number, since it is larger than the sum of its proper divisors (3105683).

40250989 is a wasteful number, since it uses less digits than its factorization.

40250989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56507.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 40250989 is about 6344.3667138651. The cubic root of 40250989 is about 342.7090069956.

The spelling of 40250989 in words is "forty million, two hundred fifty thousand, nine hundred eighty-nine".