8391601 has 4 divisors (see below), whose sum is σ = 8409600. Its totient is φ = 8373604.

The previous prime is 8391589. The next prime is 8391623. The reversal of 8391601 is 1061938.

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: 1061938 = 2 ⋅530969.

It is a cyclic number.

It is not a de Polignac number, because 8391601 - 2¹¹ = 8389553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8391601.

It is not an unprimeable number, because it can be changed into a prime (8391641) 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, 8281 + ... + 9238.

It is an arithmetic number, because the mean of its divisors is an integer number (2102400).

Almost surely, 2^8391601 is an apocalyptic number.

8391601 is the 1296-th centered decagonal number.

It is an amenable number.

8391601 is a deficient number, since it is larger than the sum of its proper divisors (17999).

8391601 is a wasteful number, since it uses less digits than its factorization.

8391601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17998.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 8391601 is about 2896.8260217003. The cubic root of 8391601 is about 203.2114970787.

The spelling of 8391601 in words is "eight million, three hundred ninety-one thousand, six hundred one".