40250987 has 16 divisors (see below), whose sum is σ = 49155840. Its totient is φ = 32190048.

The previous prime is 40250981. The next prime is 40251007. The reversal of 40250987 is 78905204.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40250987 - 2⁶ = 40250923 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 6653 + ... + 11169.

It is an arithmetic number, because the mean of its divisors is an integer number (3072240).

Almost surely, 2^40250987 is an apocalyptic number.

40250987 is a deficient number, since it is larger than the sum of its proper divisors (8904853).

40250987 is a wasteful number, since it uses less digits than its factorization.

40250987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4610.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 40250987 is about 6344.3665562450. The cubic root of 40250987 is about 342.7090013194.

The spelling of 40250987 in words is "forty million, two hundred fifty thousand, nine hundred eighty-seven".