919397 has 4 divisors (see below), whose sum is σ = 935040. Its totient is φ = 903756.

The previous prime is 919393. The next prime is 919409. The reversal of 919397 is 793919.

It is a happy number.

919397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 793919 = 7 ⋅113417.

It is a cyclic number.

It is not a de Polignac number, because 919397 - 2² = 919393 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 919397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919393) 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, 7733 + ... + 7850.

It is an arithmetic number, because the mean of its divisors is an integer number (233760).

2⁹¹⁹³⁹⁷ is an apocalyptic number.

It is an amenable number.

919397 is a deficient number, since it is larger than the sum of its proper divisors (15643).

919397 is a wasteful number, since it uses less digits than its factorization.

919397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15642.

The product of its digits is 15309, while the sum is 38.

The square root of 919397 is about 958.8519176599. The cubic root of 919397 is about 97.2376290262.

The spelling of 919397 in words is "nine hundred nineteen thousand, three hundred ninety-seven".