164199401 has 4 divisors (see below), whose sum is σ = 164234832. Its totient is φ = 164163972.

The previous prime is 164199389. The next prime is 164199403. The reversal of 164199401 is 104991461.

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.

It is a cyclic number.

It is not a de Polignac number, because 164199401 - 2²⁶ = 97090537 is a prime.

It is a super-2 number, since 2×164199401² = 53922886577517602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164199403) by changing a digit.

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, 9491 + ... + 20456.

It is an arithmetic number, because the mean of its divisors is an integer number (41058708).

Almost surely, 2^164199401 is an apocalyptic number.

It is an amenable number.

164199401 is a deficient number, since it is larger than the sum of its proper divisors (35431).

164199401 is an equidigital number, since it uses as much as digits as its factorization.

164199401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35430.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 164199401 is about 12814.0314109183. The cubic root of 164199401 is about 547.5921194982.

The spelling of 164199401 in words is "one hundred sixty-four million, one hundred ninety-nine thousand, four hundred one".