98990 has 16 divisors (see below), whose sum is σ = 187920. Its totient is φ = 37440.

The previous prime is 98981. The next prime is 98993. The reversal of 98990 is 9989.

It is a self number, because there is not a number n which added to its sum of digits gives 98990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98993) by changing a digit.

98990 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71 + ... + 450.

It is an arithmetic number, because the mean of its divisors is an integer number (11745).

2⁹⁸⁹⁹⁰ is an apocalyptic number.

98990 is a deficient number, since it is larger than the sum of its proper divisors (88930).

98990 is a wasteful number, since it uses less digits than its factorization.

98990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 98990 is about 314.6267630066. The cubic root of 98990 is about 46.2590924417.

It can be divided in two parts, 98 and 990, that multiplied together give a triangular number (97020 = T₄₄₀).

The spelling of 98990 in words is "ninety-eight thousand, nine hundred ninety".