164294399 has 4 divisors (see below), whose sum is σ = 164445264. Its totient is φ = 164143536.

The previous prime is 164294371. The next prime is 164294413. The reversal of 164294399 is 993492461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164294399 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 (164291399) 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, 73787 + ... + 75980.

It is an arithmetic number, because the mean of its divisors is an integer number (41111316).

Almost surely, 2^164294399 is an apocalyptic number.

164294399 is a deficient number, since it is larger than the sum of its proper divisors (150865).

164294399 is a wasteful number, since it uses less digits than its factorization.

164294399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150864.

The product of its digits is 419904, while the sum is 47.

The square root of 164294399 is about 12817.7376708997. The cubic root of 164294399 is about 547.6977027645.

The spelling of 164294399 in words is "one hundred sixty-four million, two hundred ninety-four thousand, three hundred ninety-nine".