1494909221 has 8 divisors (see below), whose sum is σ = 1610810880. Its totient is φ = 1379137392.

The previous prime is 1494909203. The next prime is 1494909223. The reversal of 1494909221 is 1229094941.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1494909221 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 (1494909223) 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, 7841 + ... + 55238.

It is an arithmetic number, because the mean of its divisors is an integer number (201351360).

Almost surely, 2^1494909221 is an apocalyptic number.

It is an amenable number.

1494909221 is a deficient number, since it is larger than the sum of its proper divisors (115901659).

1494909221 is a wasteful number, since it uses less digits than its factorization.

1494909221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64915.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 1494909221 is about 38664.0559305410. The cubic root of 1494909221 is about 1143.4177776134.

The spelling of 1494909221 in words is "one billion, four hundred ninety-four million, nine hundred nine thousand, two hundred twenty-one".