99990126 has 48 divisors (see below), whose sum is σ = 225773184. Its totient is φ = 33166584.

The previous prime is 99990113. The next prime is 99990139. The reversal of 99990126 is 62109999.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99990113) and next prime (99990139).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137175 + ... + 137901.

It is an arithmetic number, because the mean of its divisors is an integer number (4703608).

Almost surely, 2^99990126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99990126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112886592).

99990126 is an abundant number, since it is smaller than the sum of its proper divisors (125783058).

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

99990126 is a wasteful number, since it uses less digits than its factorization.

99990126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The square root of 99990126 is about 9999.5062878124. The cubic root of 99990126 is about 464.1436058424.

It can be divided in two parts, 999 and 90126, that added together give a cube (91125 = 45³).

The spelling of 99990126 in words is "ninety-nine million, nine hundred ninety thousand, one hundred twenty-six".