9191401 has 4 divisors (see below), whose sum is σ = 9198592. Its totient is φ = 9184212.

The previous prime is 9191393. The next prime is 9191417. The reversal of 9191401 is 1041919.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9191401 - 2³ = 9191393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9191431) 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, 1101 + ... + 4426.

It is an arithmetic number, because the mean of its divisors is an integer number (2299648).

Almost surely, 2^9191401 is an apocalyptic number.

It is an amenable number.

9191401 is a deficient number, since it is larger than the sum of its proper divisors (7191).

9191401 is a wasteful number, since it uses less digits than its factorization.

9191401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 9191401 is about 3031.7323430672. The cubic root of 9191401 is about 209.4726070780.

The spelling of 9191401 in words is "nine million, one hundred ninety-one thousand, four hundred one".