13858973 has 4 divisors (see below), whose sum is σ = 13872768. Its totient is φ = 13845180.

The previous prime is 13858969. The next prime is 13858981. The reversal of 13858973 is 37985831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37985831 = 13 ⋅2921987.

It is a cyclic number.

It is not a de Polignac number, because 13858973 - 2² = 13858969 is a prime.

It is a super-2 number, since 2×13858973² = 384142265229458, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13858993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5261 + ... + 7442.

It is an arithmetic number, because the mean of its divisors is an integer number (3468192).

Almost surely, 2^13858973 is an apocalyptic number.

It is an amenable number.

13858973 is a deficient number, since it is larger than the sum of its proper divisors (13795).

13858973 is a wasteful number, since it uses less digits than its factorization.

13858973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13794.

The product of its digits is 181440, while the sum is 44.

The square root of 13858973 is about 3722.7641612114. The cubic root of 13858973 is about 240.2022196119.

It can be divided in two parts, 1385 and 8973, that multiplied together give a triangular number (12427605 = T₄₉₈₅).

The spelling of 13858973 in words is "thirteen million, eight hundred fifty-eight thousand, nine hundred seventy-three".