901082991 has 8 divisors (see below), whose sum is σ = 1203269760. Its totient is φ = 599809112.

The previous prime is 901082969. The next prime is 901082993. The reversal of 901082991 is 199280109.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 901082991 - 2²¹ = 898985839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901082993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225915 + ... + 229868.

It is an arithmetic number, because the mean of its divisors is an integer number (150408720).

Almost surely, 2^901082991 is an apocalyptic number.

901082991 is a deficient number, since it is larger than the sum of its proper divisors (302186769).

901082991 is a wasteful number, since it uses less digits than its factorization.

901082991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456445.

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 901082991 is about 30018.0444233131. The cubic root of 901082991 is about 965.8764946758.

The spelling of 901082991 in words is "nine hundred one million, eighty-two thousand, nine hundred ninety-one".