36085391 has 4 divisors (see below), whose sum is σ = 36360984. Its totient is φ = 35809800.

The previous prime is 36085363. The next prime is 36085393. The reversal of 36085391 is 19358063.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19358063 = 457 ⋅42359.

It is a cyclic number.

It is not a de Polignac number, because 36085391 - 2¹⁸ = 35823247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36085393) 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, 137600 + ... + 137861.

It is an arithmetic number, because the mean of its divisors is an integer number (9090246).

Almost surely, 2^36085391 is an apocalyptic number.

36085391 is a deficient number, since it is larger than the sum of its proper divisors (275593).

36085391 is a wasteful number, since it uses less digits than its factorization.

36085391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275592.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 36085391 is about 6007.1117019746. Note that the first 3 decimals coincide. The cubic root of 36085391 is about 330.4535880685.

The spelling of 36085391 in words is "thirty-six million, eighty-five thousand, three hundred ninety-one".