1113990 has 32 divisors (see below), whose sum is σ = 2716416. Its totient is φ = 292320.

The previous prime is 1113971. The next prime is 1113991. The reversal of 1113990 is 993111.

It is a self number, because there is not a number n which added to its sum of digits gives 1113990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1869 + ... + 2391.

It is an arithmetic number, because the mean of its divisors is an integer number (84888).

2^1113990 is an apocalyptic number.

1113990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1113990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1358208).

1113990 is an abundant number, since it is smaller than the sum of its proper divisors (1602426).

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

1113990 is a wasteful number, since it uses less digits than its factorization.

1113990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604.

The product of its (nonzero) digits is 243, while the sum is 24.

The square root of 1113990 is about 1055.4572468840. The cubic root of 1113990 is about 103.6637934893.

It can be divided in two parts, 1113 and 990, that multiplied together give a triangular number (1101870 = T₁₄₈₄).

The spelling of 1113990 in words is "one million, one hundred thirteen thousand, nine hundred ninety".