99289240 has 32 divisors (see below), whose sum is σ = 226553760. Its totient is φ = 39155200.

The previous prime is 99289237. The next prime is 99289247. The reversal of 99289240 is 4298299.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99289247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14641 + ... + 20320.

It is an arithmetic number, because the mean of its divisors is an integer number (7079805).

Almost surely, 2^99289240 is an apocalyptic number.

It is an amenable number.

99289240 is an abundant number, since it is smaller than the sum of its proper divisors (127264520).

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

99289240 is a wasteful number, since it uses less digits than its factorization.

99289240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35043 (or 35039 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 99289240 is about 9964.3986271124. The cubic root of 99289240 is about 463.0565824238.

The spelling of 99289240 in words is "ninety-nine million, two hundred eighty-nine thousand, two hundred forty".