1420989 has 8 divisors (see below), whose sum is σ = 1902912. Its totient is φ = 943200.

The previous prime is 1420981. The next prime is 1420999. The reversal of 1420989 is 9890241.

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

It is not a de Polignac number, because 1420989 - 2³ = 1420981 is a prime.

1420989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420981) 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, 112 + ... + 1689.

It is an arithmetic number, because the mean of its divisors is an integer number (237864).

2^1420989 is an apocalyptic number.

It is an amenable number.

1420989 is a deficient number, since it is larger than the sum of its proper divisors (481923).

1420989 is a wasteful number, since it uses less digits than its factorization.

1420989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1420989 is about 1192.0524317328. The cubic root of 1420989 is about 112.4251749354.

The spelling of 1420989 in words is "one million, four hundred twenty thousand, nine hundred eighty-nine".