491902301 has 4 divisors (see below), whose sum is σ = 536620704. Its totient is φ = 447183900.

The previous prime is 491902291. The next prime is 491902337. The reversal of 491902301 is 103209194.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 491902301 - 2²⁶ = 424793437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491907301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22359185 + ... + 22359206.

It is an arithmetic number, because the mean of its divisors is an integer number (134155176).

Almost surely, 2^491902301 is an apocalyptic number.

It is an amenable number.

491902301 is a deficient number, since it is larger than the sum of its proper divisors (44718403).

491902301 is a wasteful number, since it uses less digits than its factorization.

491902301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44718402.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 491902301 is about 22178.8705979362. The cubic root of 491902301 is about 789.3924191252.

The spelling of 491902301 in words is "four hundred ninety-one million, nine hundred two thousand, three hundred one".