8398172 has 6 divisors (see below), whose sum is σ = 14696808. Its totient is φ = 4199084.

The previous prime is 8398147. The next prime is 8398177. The reversal of 8398172 is 2718938.

It is a d-powerful number, because it can be written as 8 + 3⁸ + 9² + 8³ + 1 + 7⁴ + 2²³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8398177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049768 + ... + 1049775.

It is an arithmetic number, because the mean of its divisors is an integer number (2449468).

Almost surely, 2^8398172 is an apocalyptic number.

It is an amenable number.

8398172 is a deficient number, since it is larger than the sum of its proper divisors (6298636).

8398172 is a wasteful number, since it uses less digits than its factorization.

8398172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099547 (or 2099545 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 8398172 is about 2897.9599721183. The cubic root of 8398172 is about 203.2645244794.

The spelling of 8398172 in words is "eight million, three hundred ninety-eight thousand, one hundred seventy-two".