860408001 has 30 divisors (see below), whose sum is σ = 1319241462. Its totient is φ = 558515520.

The previous prime is 860407981. The next prime is 860408011. The reversal of 860408001 is 100804068.

It can be written as a sum of positive squares in 3 ways, for example, as 162180225 + 698227776 = 12735^2 + 26424^2 .

It is not a de Polignac number, because 860408001 - 2⁶ = 860407937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860408011) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1690135 + ... + 1690643.

Almost surely, 2^860408001 is an apocalyptic number.

860408001 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

860408001 is a deficient number, since it is larger than the sum of its proper divisors (458833461).

860408001 is an frugal number, since it uses more digits than its factorization.

860408001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 860408001 is about 29332.7121316799. The cubic root of 860408001 is about 951.1189036214.

The spelling of 860408001 in words is "eight hundred sixty million, four hundred eight thousand, one".