16841397 has 4 divisors (see below), whose sum is σ = 22455200. Its totient is φ = 11227596.

The previous prime is 16841371. The next prime is 16841399. The reversal of 16841397 is 79314861.

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.

It is not a de Polignac number, because 16841397 - 2⁷ = 16841269 is a prime.

It is a super-3 number, since 3×16841397³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16841399) 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, 2806897 + ... + 2806902.

It is an arithmetic number, because the mean of its divisors is an integer number (5613800).

Almost surely, 2^16841397 is an apocalyptic number.

It is an amenable number.

16841397 is a deficient number, since it is larger than the sum of its proper divisors (5613803).

16841397 is an equidigital number, since it uses as much as digits as its factorization.

16841397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5613802.

The product of its digits is 36288, while the sum is 39.

The square root of 16841397 is about 4103.8271162416. The cubic root of 16841397 is about 256.3260260637.

It can be divided in two parts, 1684 and 1397, that added together give a triangular number (3081 = T₇₈).

The spelling of 16841397 in words is "sixteen million, eight hundred forty-one thousand, three hundred ninety-seven".