1512989 has 4 divisors (see below), whose sum is σ = 1592640. Its totient is φ = 1433340.

The previous prime is 1512961. The next prime is 1513013. The reversal of 1512989 is 9892151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1512989 - 2¹² = 1508893 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 (1512289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39797 + ... + 39834.

It is an arithmetic number, because the mean of its divisors is an integer number (398160).

2^1512989 is an apocalyptic number.

1512989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1512989 is a deficient number, since it is larger than the sum of its proper divisors (79651).

1512989 is an equidigital number, since it uses as much as digits as its factorization.

1512989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79650.

The product of its digits is 6480, while the sum is 35.

The square root of 1512989 is about 1230.0361783297. The cubic root of 1512989 is about 114.8008904980.

The spelling of 1512989 in words is "one million, five hundred twelve thousand, nine hundred eighty-nine".