1421646988 has 12 divisors (see below), whose sum is σ = 2488220280. Its totient is φ = 710726912.

The previous prime is 1421646971. The next prime is 1421647001. The reversal of 1421646988 is 8896461241.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16620 + ... + 55852.

It is an arithmetic number, because the mean of its divisors is an integer number (207351690).

Almost surely, 2^1421646988 is an apocalyptic number.

It is an amenable number.

1421646988 is a deficient number, since it is larger than the sum of its proper divisors (1066573292).

1421646988 is a wasteful number, since it uses less digits than its factorization.

1421646988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48296 (or 48294 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 1421646988 is about 37704.7342915979. The cubic root of 1421646988 is about 1124.4252505818.

The spelling of 1421646988 in words is "one billion, four hundred twenty-one million, six hundred forty-six thousand, nine hundred eighty-eight".