86204973 has 4 divisors (see below), whose sum is σ = 114939968. Its totient is φ = 57469980.

The previous prime is 86204971. The next prime is 86204983. The reversal of 86204973 is 37940268.

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 86204973 - 2¹ = 86204971 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86204971) 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, 14367493 + ... + 14367498.

It is an arithmetic number, because the mean of its divisors is an integer number (28734992).

Almost surely, 2^86204973 is an apocalyptic number.

It is an amenable number.

86204973 is a deficient number, since it is larger than the sum of its proper divisors (28734995).

86204973 is a wasteful number, since it uses less digits than its factorization.

86204973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28734994.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 86204973 is about 9284.6633218443. The cubic root of 86204973 is about 441.7508970164.

The spelling of 86204973 in words is "eighty-six million, two hundred four thousand, nine hundred seventy-three".