164044401 has 4 divisors (see below), whose sum is σ = 218725872. Its totient is φ = 109362932.

The previous prime is 164044399. The next prime is 164044411. The reversal of 164044401 is 104440461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104440461 = 3 ⋅34813487.

It is a cyclic number.

It is not a de Polignac number, because 164044401 - 2¹ = 164044399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164044411) 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, 27340731 + ... + 27340736.

It is an arithmetic number, because the mean of its divisors is an integer number (54681468).

Almost surely, 2^164044401 is an apocalyptic number.

It is an amenable number.

164044401 is a deficient number, since it is larger than the sum of its proper divisors (54681471).

164044401 is an equidigital number, since it uses as much as digits as its factorization.

164044401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54681470.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 164044401 is about 12807.9819253464. The cubic root of 164044401 is about 547.4197609731.

Adding to 164044401 its reverse (104440461), we get a palindrome (268484862).

The spelling of 164044401 in words is "one hundred sixty-four million, forty-four thousand, four hundred one".