264989397 has 8 divisors (see below), whose sum is σ = 353445280. Its totient is φ = 176596560.

The previous prime is 264989377. The next prime is 264989399. The reversal of 264989397 is 793989462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 264989397 - 2¹⁴ = 264973013 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 (264989399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4879 + ... + 23532.

It is an arithmetic number, because the mean of its divisors is an integer number (44180660).

Almost surely, 2^264989397 is an apocalyptic number.

It is an amenable number.

264989397 is a deficient number, since it is larger than the sum of its proper divisors (88455883).

264989397 is a wasteful number, since it uses less digits than its factorization.

264989397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31523.

The product of its digits is 5878656, while the sum is 57.

The square root of 264989397 is about 16278.4949242858. The cubic root of 264989397 is about 642.3072621071.

The spelling of 264989397 in words is "two hundred sixty-four million, nine hundred eighty-nine thousand, three hundred ninety-seven".