383690091 has 4 divisors (see below), whose sum is σ = 511586792. Its totient is φ = 255793392.

The previous prime is 383690089. The next prime is 383690129. The reversal of 383690091 is 190096383.

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

It is not a de Polignac number, because 383690091 - 2¹ = 383690089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (383690081) 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, 63948346 + ... + 63948351.

It is an arithmetic number, because the mean of its divisors is an integer number (127896698).

Almost surely, 2^383690091 is an apocalyptic number.

383690091 is a deficient number, since it is larger than the sum of its proper divisors (127896701).

383690091 is a wasteful number, since it uses less digits than its factorization.

383690091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127896700.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 383690091 is about 19588.0088574618. The cubic root of 383690091 is about 726.6526490810.

The spelling of 383690091 in words is "three hundred eighty-three million, six hundred ninety thousand, ninety-one".