494031421 has 8 divisors (see below), whose sum is σ = 555166080. Its totient is φ = 436201392.

The previous prime is 494031409. The next prime is 494031431. The reversal of 494031421 is 124130494.

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 494031421 - 2⁹ = 494030909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 494031421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494031431) 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, 825841 + ... + 826438.

It is an arithmetic number, because the mean of its divisors is an integer number (69395760).

Almost surely, 2^494031421 is an apocalyptic number.

It is an amenable number.

494031421 is a deficient number, since it is larger than the sum of its proper divisors (61134659).

494031421 is a wasteful number, since it uses less digits than its factorization.

494031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652315.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 494031421 is about 22226.8176084657. The cubic root of 494031421 is about 790.5296992329.

The spelling of 494031421 in words is "four hundred ninety-four million, thirty-one thousand, four hundred twenty-one".