854135237 has 4 divisors (see below), whose sum is σ = 868137516. Its totient is φ = 840132960.

The previous prime is 854135201. The next prime is 854135257. The reversal of 854135237 is 732531458.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 456292321 + 397842916 = 21361^2 + 19946^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-854135237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 854135237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854135257) 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, 7001048 + ... + 7001169.

It is an arithmetic number, because the mean of its divisors is an integer number (217034379).

Almost surely, 2^854135237 is an apocalyptic number.

It is an amenable number.

854135237 is a deficient number, since it is larger than the sum of its proper divisors (14002279).

854135237 is a wasteful number, since it uses less digits than its factorization.

854135237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14002278.

The product of its digits is 100800, while the sum is 38.

The square root of 854135237 is about 29225.5921582438. The cubic root of 854135237 is about 948.8019012795.

The spelling of 854135237 in words is "eight hundred fifty-four million, one hundred thirty-five thousand, two hundred thirty-seven".