164439401 has 8 divisors (see below), whose sum is σ = 188083584. Its totient is φ = 140833440.

The previous prime is 164439391. The next prime is 164439421. The reversal of 164439401 is 104934461.

It is a happy number.

164439401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164439401 - 2¹⁸ = 164177257 is a prime.

It is a super-3 number, since 3×164439401³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164439421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356 + ... + 18138.

It is an arithmetic number, because the mean of its divisors is an integer number (23510448).

Almost surely, 2^164439401 is an apocalyptic number.

It is an amenable number.

164439401 is a deficient number, since it is larger than the sum of its proper divisors (23644183).

164439401 is a wasteful number, since it uses less digits than its factorization.

164439401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19111.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 164439401 is about 12823.3927257961. The cubic root of 164439401 is about 547.8587833417.

The spelling of 164439401 in words is "one hundred sixty-four million, four hundred thirty-nine thousand, four hundred one".