164207969 has 4 divisors (see below), whose sum is σ = 164335296. Its totient is φ = 164080644.

The previous prime is 164207963. The next prime is 164207987. The reversal of 164207969 is 969702461.

164207969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-164207969 is a prime.

It is a super-2 number, since 2×164207969² = 53928514166209922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164207963) 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, 61709 + ... + 64314.

It is an arithmetic number, because the mean of its divisors is an integer number (41083824).

Almost surely, 2^164207969 is an apocalyptic number.

It is an amenable number.

164207969 is a deficient number, since it is larger than the sum of its proper divisors (127327).

164207969 is a wasteful number, since it uses less digits than its factorization.

164207969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127326.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 164207969 is about 12814.3657275731. The cubic root of 164207969 is about 547.6016438684.

It can be divided in two parts, 16420 and 7969, that added together give a cube (24389 = 29³).

The spelling of 164207969 in words is "one hundred sixty-four million, two hundred seven thousand, nine hundred sixty-nine".