98990405 has 8 divisors (see below), whose sum is σ = 125776152. Its totient is φ = 74533888.

The previous prime is 98990363. The next prime is 98990447. The reversal of 98990405 is 50409989.

It is an interprime number because it is at equal distance from previous prime (98990363) and next prime (98990447).

It can be written as a sum of positive squares in 4 ways, for example, as 22287841 + 76702564 = 4721^2 + 8758^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 98990405 - 2⁶ = 98990341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582212 + ... + 582381.

It is an arithmetic number, because the mean of its divisors is an integer number (15722019).

Almost surely, 2^98990405 is an apocalyptic number.

It is an amenable number.

98990405 is a deficient number, since it is larger than the sum of its proper divisors (26785747).

98990405 is a wasteful number, since it uses less digits than its factorization.

98990405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164615.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 98990405 is about 9949.3921924910. The cubic root of 98990405 is about 462.5915552860.

The spelling of 98990405 in words is "ninety-eight million, nine hundred ninety thousand, four hundred five".