494872397 has 8 divisors (see below), whose sum is σ = 524475000. Its totient is φ = 465324544.

The previous prime is 494872381. The next prime is 494872409. The reversal of 494872397 is 793278494.

It can be written as a sum of positive squares in 4 ways, for example, as 59691076 + 435181321 = 7726^2 + 20861^2 .

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

It is not a de Polignac number, because 494872397 - 2⁴ = 494872381 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 (494872097) 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, 5729 + ... + 31977.

It is an arithmetic number, because the mean of its divisors is an integer number (65559375).

Almost surely, 2^494872397 is an apocalyptic number.

It is an amenable number.

494872397 is a deficient number, since it is larger than the sum of its proper divisors (29602603).

494872397 is a wasteful number, since it uses less digits than its factorization.

494872397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27375.

The product of its digits is 3048192, while the sum is 53.

The square root of 494872397 is about 22245.7276122855. The cubic root of 494872397 is about 790.9780105477.

The spelling of 494872397 in words is "four hundred ninety-four million, eight hundred seventy-two thousand, three hundred ninety-seven".