491700039 has 8 divisors (see below), whose sum is σ = 656117760. Its totient is φ = 327541176.

The previous prime is 491700007. The next prime is 491700047. The reversal of 491700039 is 930007194.

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

It is not a de Polignac number, because 491700039 - 2⁵ = 491700007 is a prime.

It is a super-3 number, since 3×491700039³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 491699982 and 491700009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491700089) 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 7 ways as a sum of consecutive naturals, for example, 60237 + ... + 67910.

It is an arithmetic number, because the mean of its divisors is an integer number (82014720).

Almost surely, 2^491700039 is an apocalyptic number.

491700039 is a deficient number, since it is larger than the sum of its proper divisors (164417721).

491700039 is a wasteful number, since it uses less digits than its factorization.

491700039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129429.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 491700039 is about 22174.3103387681. The cubic root of 491700039 is about 789.2842093053.

The spelling of 491700039 in words is "four hundred ninety-one million, seven hundred thousand, thirty-nine".