10354991 has 4 divisors (see below), whose sum is σ = 10805232. Its totient is φ = 9904752.

The previous prime is 10354987. The next prime is 10355011. The reversal of 10354991 is 19945301.

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 10354991 - 2² = 10354987 is a prime.

It is a super-3 number, since 3×10354991³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10354291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225086 + ... + 225131.

It is an arithmetic number, because the mean of its divisors is an integer number (2701308).

Almost surely, 2^10354991 is an apocalyptic number.

10354991 is a deficient number, since it is larger than the sum of its proper divisors (450241).

10354991 is an equidigital number, since it uses as much as digits as its factorization.

10354991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450240.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 10354991 is about 3217.9171835210. The cubic root of 10354991 is about 217.9632334258.

The spelling of 10354991 in words is "ten million, three hundred fifty-four thousand, nine hundred ninety-one".