13896990 has 96 divisors (see below), whose sum is σ = 39626496. Its totient is φ = 3363840.

The previous prime is 13896989. The next prime is 13896997. The reversal of 13896990 is 9969831.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13896997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47284 + ... + 47576.

It is an arithmetic number, because the mean of its divisors is an integer number (412776).

Almost surely, 2^13896990 is an apocalyptic number.

13896990 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 13896990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19813248).

13896990 is an abundant number, since it is smaller than the sum of its proper divisors (25729506).

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

13896990 is a wasteful number, since it uses less digits than its factorization.

13896990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 351 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 13896990 is about 3727.8666821656. The cubic root of 13896990 is about 240.4216545970.

The spelling of 13896990 in words is "thirteen million, eight hundred ninety-six thousand, nine hundred ninety".