236090993 has 4 divisors (see below), whose sum is σ = 237539568. Its totient is φ = 234642420.

The previous prime is 236090983. The next prime is 236090999. The reversal of 236090993 is 399090632.

It is a happy number.

236090993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 236090993 - 2⁴ = 236090977 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 236090993.

It is not an unprimeable number, because it can be changed into a prime (236090999) 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, 724043 + ... + 724368.

It is an arithmetic number, because the mean of its divisors is an integer number (59384892).

Almost surely, 2^236090993 is an apocalyptic number.

It is an amenable number.

236090993 is a deficient number, since it is larger than the sum of its proper divisors (1448575).

236090993 is a wasteful number, since it uses less digits than its factorization.

236090993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448574.

The product of its (nonzero) digits is 78732, while the sum is 41.

The square root of 236090993 is about 15365.2527802181. The cubic root of 236090993 is about 618.0540732178.

The spelling of 236090993 in words is "two hundred thirty-six million, ninety thousand, nine hundred ninety-three".