164211407 has 4 divisors (see below), whose sum is σ = 164430816. Its totient is φ = 163992000.

The previous prime is 164211401. The next prime is 164211409. The reversal of 164211407 is 704112461.

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

It is a cyclic number.

It is not a de Polignac number, because 164211407 - 2⁴ = 164211391 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 (164211401) 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, 108578 + ... + 110079.

It is an arithmetic number, because the mean of its divisors is an integer number (41107704).

Almost surely, 2^164211407 is an apocalyptic number.

164211407 is a deficient number, since it is larger than the sum of its proper divisors (219409).

164211407 is an equidigital number, since it uses as much as digits as its factorization.

164211407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219408.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 164211407 is about 12814.4998731905. The cubic root of 164211407 is about 547.6054655289.

Adding to 164211407 its reverse (704112461), we get a palindrome (868323868).

The spelling of 164211407 in words is "one hundred sixty-four million, two hundred eleven thousand, four hundred seven".