1420989812 has 48 divisors (see below), whose sum is σ = 2879452800. Its totient is φ = 606412800.

The previous prime is 1420989799. The next prime is 1420989901. The reversal of 1420989812 is 2189890241.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 333737 + ... + 337967.

It is an arithmetic number, because the mean of its divisors is an integer number (59988600).

Almost surely, 2^1420989812 is an apocalyptic number.

It is an amenable number.

1420989812 is an abundant number, since it is smaller than the sum of its proper divisors (1458462988).

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

1420989812 is a wasteful number, since it uses less digits than its factorization.

1420989812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712 (or 4710 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 1420989812 is about 37696.0185165489. The cubic root of 1420989812 is about 1124.2519634985.

The spelling of 1420989812 in words is "one billion, four hundred twenty million, nine hundred eighty-nine thousand, eight hundred twelve".