987899753 has 2 divisors, whose sum is σ = 987899754. Its totient is φ = 987899752.

The previous prime is 987899743. The next prime is 987899777. The reversal of 987899753 is 357998789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 839376784 + 148522969 = 28972^2 + 12187^2 .

It is a cyclic number.

It is not a de Polignac number, because 987899753 - 2¹⁰ = 987898729 is a prime.

It is a super-2 number, since 2×987899753² = 1951891843954922018, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 987899753.

It is not a weakly prime, because it can be changed into another prime (987899743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493949876 + 493949877.

It is an arithmetic number, because the mean of its divisors is an integer number (493949877).

Almost surely, 2^987899753 is an apocalyptic number.

It is an amenable number.

987899753 is a deficient number, since it is larger than the sum of its proper divisors (1).

987899753 is an equidigital number, since it uses as much as digits as its factorization.

987899753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34292160, while the sum is 65.

The square root of 987899753 is about 31430.8726095856. The cubic root of 987899753 is about 995.9502056390.

The spelling of 987899753 in words is "nine hundred eighty-seven million, eight hundred ninety-nine thousand, seven hundred fifty-three".