264404390 has 8 divisors (see below), whose sum is σ = 475927920. Its totient is φ = 105761752.

The previous prime is 264404359. The next prime is 264404401. The reversal of 264404390 is 93404462.

264404390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13220210 + ... + 13220229.

It is an arithmetic number, because the mean of its divisors is an integer number (59490990).

Almost surely, 2^264404390 is an apocalyptic number.

264404390 is a deficient number, since it is larger than the sum of its proper divisors (211523530).

264404390 is a wasteful number, since it uses less digits than its factorization.

264404390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26440446.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 264404390 is about 16260.5162894663. The cubic root of 264404390 is about 641.8342480907.

The spelling of 264404390 in words is "two hundred sixty-four million, four hundred four thousand, three hundred ninety".