264398 has 4 divisors (see below), whose sum is σ = 396600. Its totient is φ = 132198.

The previous prime is 264391. The next prime is 264403. The reversal of 264398 is 893462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 893462 = 2 ⋅446731.

It is a d-powerful number, because it can be written as 2¹¹ + 6² + 3⁴ + 4⁹ + 9² + 8 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66098 + ... + 66101.

It is an arithmetic number, because the mean of its divisors is an integer number (99150).

2²⁶⁴³⁹⁸ is an apocalyptic number.

264398 is a deficient number, since it is larger than the sum of its proper divisors (132202).

264398 is a wasteful number, since it uses less digits than its factorization.

264398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132201.

The product of its digits is 10368, while the sum is 32.

The square root of 264398 is about 514.1964605090. The cubic root of 264398 is about 64.1829077534.

The spelling of 264398 in words is "two hundred sixty-four thousand, three hundred ninety-eight".