98765440 has 32 divisors (see below), whose sum is σ = 236112660. Its totient is φ = 39505920.

The previous prime is 98765431. The next prime is 98765441. The reversal of 98765440 is 4456789.

It can be written as a sum of positive squares in 2 ways, for example, as 88059456 + 10705984 = 9384^2 + 3272^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×98765440³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98765441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76521 + ... + 77800.

Almost surely, 2^98765440 is an apocalyptic number.

It is an amenable number.

98765440 is an abundant number, since it is smaller than the sum of its proper divisors (137347220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

98765440 is a wasteful number, since it uses less digits than its factorization.

98765440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154340 (or 154328 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 98765440 is about 9938.0802975223. The cubic root of 98765440 is about 462.2408618935.

The spelling of 98765440 in words is "ninety-eight million, seven hundred sixty-five thousand, four hundred forty".