86861401 has 4 divisors (see below), whose sum is σ = 94757904. Its totient is φ = 78964900.

The previous prime is 86861353. The next prime is 86861431. The reversal of 86861401 is 10416868.

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 a cyclic number.

It is not a de Polignac number, because 86861401 - 2¹⁹ = 86337113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86861431) 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, 3948235 + ... + 3948256.

It is an arithmetic number, because the mean of its divisors is an integer number (23689476).

Almost surely, 2^86861401 is an apocalyptic number.

It is an amenable number.

86861401 is a deficient number, since it is larger than the sum of its proper divisors (7896503).

86861401 is a wasteful number, since it uses less digits than its factorization.

86861401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7896502.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 86861401 is about 9319.9464054253. The cubic root of 86861401 is about 442.8693348955.

The spelling of 86861401 in words is "eighty-six million, eight hundred sixty-one thousand, four hundred one".