1401330091 has 4 divisors (see below), whose sum is σ = 1601520112. Its totient is φ = 1201140072.

The previous prime is 1401330089. The next prime is 1401330097. The reversal of 1401330091 is 1900331041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1900331041 = 7 ⋅271475863.

It is a cyclic number.

It is not a de Polignac number, because 1401330091 - 2¹ = 1401330089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401330097) 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, 100095000 + ... + 100095013.

It is an arithmetic number, because the mean of its divisors is an integer number (400380028).

Almost surely, 2^1401330091 is an apocalyptic number.

1401330091 is a deficient number, since it is larger than the sum of its proper divisors (200190021).

1401330091 is an equidigital number, since it uses as much as digits as its factorization.

1401330091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200190020.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1401330091 is about 37434.3437367346. The cubic root of 1401330091 is about 1119.0431056822.

The spelling of 1401330091 in words is "one billion, four hundred one million, three hundred thirty thousand, ninety-one".