901330391 has 4 divisors (see below), whose sum is σ = 970663512. Its totient is φ = 831997272.

The previous prime is 901330351. The next prime is 901330393. The reversal of 901330391 is 193033109.

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

It is a cyclic number.

It is not a de Polignac number, because 901330391 - 2¹⁸ = 901068247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901330393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34666541 + ... + 34666566.

It is an arithmetic number, because the mean of its divisors is an integer number (242665878).

Almost surely, 2^901330391 is an apocalyptic number.

901330391 is a deficient number, since it is larger than the sum of its proper divisors (69333121).

901330391 is a wasteful number, since it uses less digits than its factorization.

901330391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69333120.

The product of its (nonzero) digits is 2187, while the sum is 29.

The square root of 901330391 is about 30022.1649952165. The cubic root of 901330391 is about 965.9648831229.

The spelling of 901330391 in words is "nine hundred one million, three hundred thirty thousand, three hundred ninety-one".