864217426 has 16 divisors (see below), whose sum is σ = 1310934240. Its totient is φ = 427248000.

The previous prime is 864217381. The next prime is 864217441. The reversal of 864217426 is 624712468.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382801 + ... + 385051.

It is an arithmetic number, because the mean of its divisors is an integer number (81933390).

Almost surely, 2^864217426 is an apocalyptic number.

864217426 is a deficient number, since it is larger than the sum of its proper divisors (446716814).

864217426 is a wasteful number, since it uses less digits than its factorization.

864217426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329.

The product of its digits is 129024, while the sum is 40.

The square root of 864217426 is about 29397.5751721124. The cubic root of 864217426 is about 952.5205185220.

The spelling of 864217426 in words is "eight hundred sixty-four million, two hundred seventeen thousand, four hundred twenty-six".