8401864 has 8 divisors (see below), whose sum is σ = 15753510. Its totient is φ = 4200928.

The previous prime is 8401807. The next prime is 8401873. The reversal of 8401864 is 4681048.

It can be written as a sum of positive squares in only one way, i.e., 8076964 + 324900 = 2842^2 + 570^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525109 + ... + 525124.

Almost surely, 2^8401864 is an apocalyptic number.

It is an amenable number.

8401864 is a deficient number, since it is larger than the sum of its proper divisors (7351646).

8401864 is a wasteful number, since it uses less digits than its factorization.

8401864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050239 (or 1050235 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 8401864 is about 2898.5969019510. The cubic root of 8401864 is about 203.2943064637.

It can be divided in two parts, 840 and 1864, that added together give a square (2704 = 52²).

The spelling of 8401864 in words is "eight million, four hundred one thousand, eight hundred sixty-four".