919345797 has 12 divisors (see below), whose sum is σ = 1333114380. Its totient is φ = 610510848.

The previous prime is 919345781. The next prime is 919345841. The reversal of 919345797 is 797543919.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 755480196 + 163865601 = 27486^2 + 12801^2 .

It is not a de Polignac number, because 919345797 - 2⁴ = 919345781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919343797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196422 + ... + 201047.

It is an arithmetic number, because the mean of its divisors is an integer number (111092865).

Almost surely, 2^919345797 is an apocalyptic number.

It is an amenable number.

919345797 is a deficient number, since it is larger than the sum of its proper divisors (413768583).

919345797 is a wasteful number, since it uses less digits than its factorization.

919345797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397732 (or 397729 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 54.

The square root of 919345797 is about 30320.7156412905. The cubic root of 919345797 is about 972.3582387541.

The spelling of 919345797 in words is "nine hundred nineteen million, three hundred forty-five thousand, seven hundred ninety-seven".