494036621 has 8 divisors (see below), whose sum is σ = 540762264. Its totient is φ = 448557120.

The previous prime is 494036611. The next prime is 494036629. The reversal of 494036621 is 126630494.

It can be written as a sum of positive squares in 4 ways, for example, as 82555396 + 411481225 = 9086^2 + 20285^2 .

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 494036621 - 2²² = 489842317 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 (494036629) 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, 310706 + ... + 312291.

It is an arithmetic number, because the mean of its divisors is an integer number (67595283).

Almost surely, 2^494036621 is an apocalyptic number.

It is an amenable number.

494036621 is a deficient number, since it is larger than the sum of its proper divisors (46725643).

494036621 is a wasteful number, since it uses less digits than its factorization.

494036621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623071.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 494036621 is about 22226.9345839682. The cubic root of 494036621 is about 790.5324728352.

The spelling of 494036621 in words is "four hundred ninety-four million, thirty-six thousand, six hundred twenty-one".