940988887 has 2 divisors, whose sum is σ = 940988888. Its totient is φ = 940988886.

The previous prime is 940988861. The next prime is 940988899. The reversal of 940988887 is 788889049.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-940988887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (940988837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470494443 + 470494444.

It is an arithmetic number, because the mean of its divisors is an integer number (470494444).

Almost surely, 2^940988887 is an apocalyptic number.

940988887 is a deficient number, since it is larger than the sum of its proper divisors (1).

940988887 is an equidigital number, since it uses as much as digits as its factorization.

940988887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 61.

The square root of 940988887 is about 30675.5421630979. The cubic root of 940988887 is about 979.9294989544.

The spelling of 940988887 in words is "nine hundred forty million, nine hundred eighty-eight thousand, eight hundred eighty-seven".