938454091 has 4 divisors (see below), whose sum is σ = 941414832. Its totient is φ = 935493352.

The previous prime is 938454071. The next prime is 938454107. The reversal of 938454091 is 190454839.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190454839 = 2143 ⋅88873.

It is a cyclic number.

It is not a de Polignac number, because 938454091 - 2²⁹ = 401583179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (938454031) 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, 1479895 + ... + 1480528.

It is an arithmetic number, because the mean of its divisors is an integer number (235353708).

Almost surely, 2^938454091 is an apocalyptic number.

938454091 is a deficient number, since it is larger than the sum of its proper divisors (2960741).

938454091 is a wasteful number, since it uses less digits than its factorization.

938454091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2960740.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 938454091 is about 30634.1980636021. The cubic root of 938454091 is about 979.0488101694.

The spelling of 938454091 in words is "nine hundred thirty-eight million, four hundred fifty-four thousand, ninety-one".