1421609394 has 32 divisors (see below), whose sum is σ = 3012586560. Its totient is φ = 445681152.

The previous prime is 1421609389. The next prime is 1421609401. The reversal of 1421609394 is 4939061241.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171702 + ... + 179790.

It is an arithmetic number, because the mean of its divisors is an integer number (94143330).

Almost surely, 2^1421609394 is an apocalyptic number.

1421609394 is an abundant number, since it is smaller than the sum of its proper divisors (1590977166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421609394 is a wasteful number, since it uses less digits than its factorization.

1421609394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9834.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1421609394 is about 37704.2357567422. The cubic root of 1421609394 is about 1124.4153390694.

The spelling of 1421609394 in words is "one billion, four hundred twenty-one million, six hundred nine thousand, three hundred ninety-four".