8919397 has 4 divisors (see below), whose sum is σ = 8987616. Its totient is φ = 8851180.

The previous prime is 8919389. The next prime is 8919401. The reversal of 8919397 is 7939198.

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 a cyclic number.

It is not a de Polignac number, because 8919397 - 2³ = 8919389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8919347) 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, 33913 + ... + 34174.

It is an arithmetic number, because the mean of its divisors is an integer number (2246904).

Almost surely, 2^8919397 is an apocalyptic number.

It is an amenable number.

8919397 is a deficient number, since it is larger than the sum of its proper divisors (68219).

8919397 is a wasteful number, since it uses less digits than its factorization.

8919397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68218.

The product of its digits is 122472, while the sum is 46.

The square root of 8919397 is about 2986.5359532408. The cubic root of 8919397 is about 207.3855526036.

It can be divided in two parts, 8919 and 397, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 8919397 in words is "eight million, nine hundred nineteen thousand, three hundred ninety-seven".