13896421 has 8 divisors (see below), whose sum is σ = 17325504. Its totient is φ = 10828320.

The previous prime is 13896419. The next prime is 13896433. The reversal of 13896421 is 12469831.

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 13896421 - 2¹ = 13896419 is a prime.

It is a super-2 number, since 2×13896421² = 386221033218482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13896461) 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 7 ways as a sum of consecutive naturals, for example, 90160 + ... + 90313.

It is an arithmetic number, because the mean of its divisors is an integer number (2165688).

Almost surely, 2^13896421 is an apocalyptic number.

13896421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13896421 is a deficient number, since it is larger than the sum of its proper divisors (3429083).

13896421 is a wasteful number, since it uses less digits than its factorization.

13896421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180491.

The product of its digits is 10368, while the sum is 34.

The square root of 13896421 is about 3727.7903642775. The cubic root of 13896421 is about 240.4183732680.

The spelling of 13896421 in words is "thirteen million, eight hundred ninety-six thousand, four hundred twenty-one".