864389401 has 8 divisors (see below), whose sum is σ = 911311520. Its totient is φ = 817610112.

The previous prime is 864389329. The next prime is 864389413. The reversal of 864389401 is 104983468.

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 864389401 - 2¹³ = 864381209 is a prime.

It is a super-2 number, since 2×864389401² = 1494338073122277602, which contains 22 as substring.

It is the 29401-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864380401) by changing a digit.

It is a nontrivial repunit in base 29400.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23160 + ... + 47593.

It is an arithmetic number, because the mean of its divisors is an integer number (113913940).

Almost surely, 2^864389401 is an apocalyptic number.

It is an amenable number.

864389401 is a deficient number, since it is larger than the sum of its proper divisors (46922119).

864389401 is a wasteful number, since it uses less digits than its factorization.

864389401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71415.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 864389401 is about 29400.5000127549. The cubic root of 864389401 is about 952.5836966246.

The spelling of 864389401 in words is "eight hundred sixty-four million, three hundred eighty-nine thousand, four hundred one".