8642919 has 16 divisors (see below), whose sum is σ = 12300768. Its totient is φ = 5379072.

The previous prime is 8642911. The next prime is 8642927. The reversal of 8642919 is 9192468.

8642919 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8642911) and next prime (8642927).

It is not a de Polignac number, because 8642919 - 2³ = 8642911 is a prime.

It is a super-2 number, since 2×8642919² = 149400097681122, which contains 22 as substring.

8642919 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8642911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6369 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (768798).

Almost surely, 2^8642919 is an apocalyptic number.

8642919 is a deficient number, since it is larger than the sum of its proper divisors (3657849).

8642919 is a wasteful number, since it uses less digits than its factorization.

8642919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394.

The product of its digits is 31104, while the sum is 39.

The square root of 8642919 is about 2939.8841813922. The cubic root of 8642919 is about 205.2202194243.

The spelling of 8642919 in words is "eight million, six hundred forty-two thousand, nine hundred nineteen".