989896761 has 32 divisors (see below), whose sum is σ = 1696235520. Its totient is φ = 558831312.

The previous prime is 989896711. The next prime is 989896763. The reversal of 989896761 is 167698989.

It is not a de Polignac number, because 989896761 - 2¹³ = 989888569 is a prime.

It is a super-2 number, since 2×989896761² = 1959791194876582242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (989896763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15865 + ... + 47238.

It is an arithmetic number, because the mean of its divisors is an integer number (53007360).

Almost surely, 2^989896761 is an apocalyptic number.

It is an amenable number.

989896761 is a deficient number, since it is larger than the sum of its proper divisors (706338759).

989896761 is a wasteful number, since it uses less digits than its factorization.

989896761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63202 (or 63196 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 989896761 is about 31462.6248269276. The cubic root of 989896761 is about 996.6208478593.

The spelling of 989896761 in words is "nine hundred eighty-nine million, eight hundred ninety-six thousand, seven hundred sixty-one".