83854691 has 4 divisors (see below), whose sum is σ = 86121072. Its totient is φ = 81588312.

The previous prime is 83854663. The next prime is 83854697. The reversal of 83854691 is 19645838.

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

It is a cyclic number.

It is not a de Polignac number, because 83854691 - 2¹⁸ = 83592547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83854697) 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, 1133135 + ... + 1133208.

It is an arithmetic number, because the mean of its divisors is an integer number (21530268).

Almost surely, 2^83854691 is an apocalyptic number.

83854691 is a deficient number, since it is larger than the sum of its proper divisors (2266381).

83854691 is a wasteful number, since it uses less digits than its factorization.

83854691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266380.

The product of its digits is 207360, while the sum is 44.

The square root of 83854691 is about 9157.2207028115. The cubic root of 83854691 is about 437.6992350788.

The spelling of 83854691 in words is "eighty-three million, eight hundred fifty-four thousand, six hundred ninety-one".