164039997 has 8 divisors (see below), whose sum is σ = 238603680. Its totient is φ = 99418160.

The previous prime is 164039971. The next prime is 164039999. The reversal of 164039997 is 799930461.

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 164039997 - 2²⁰ = 162991421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164039999) 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, 2485422 + ... + 2485487.

It is an arithmetic number, because the mean of its divisors is an integer number (29825460).

Almost surely, 2^164039997 is an apocalyptic number.

It is an amenable number.

164039997 is a deficient number, since it is larger than the sum of its proper divisors (74563683).

164039997 is a wasteful number, since it uses less digits than its factorization.

164039997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4970923.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 164039997 is about 12807.8100001523. The cubic root of 164039997 is about 547.4148621811.

The spelling of 164039997 in words is "one hundred sixty-four million, thirty-nine thousand, nine hundred ninety-seven".