863251401 has 4 divisors (see below), whose sum is σ = 1151001872. Its totient is φ = 575500932.

The previous prime is 863251399. The next prime is 863251421. The reversal of 863251401 is 104152368.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 863251401 - 2¹ = 863251399 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (863251421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143875231 + ... + 143875236.

It is an arithmetic number, because the mean of its divisors is an integer number (287750468).

Almost surely, 2^863251401 is an apocalyptic number.

It is an amenable number.

863251401 is a deficient number, since it is larger than the sum of its proper divisors (287750471).

863251401 is a wasteful number, since it uses less digits than its factorization.

863251401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287750470.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 863251401 is about 29381.1402263425. The cubic root of 863251401 is about 952.1654760403.

The spelling of 863251401 in words is "eight hundred sixty-three million, two hundred fifty-one thousand, four hundred one".