1021462989 has 16 divisors (see below), whose sum is σ = 1422833664. Its totient is φ = 651063600.

The previous prime is 1021462961. The next prime is 1021462997. The reversal of 1021462989 is 9892641201.

It is not a de Polignac number, because 1021462989 - 2⁵ = 1021462957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021462989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021462909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58447 + ... + 73884.

It is an arithmetic number, because the mean of its divisors is an integer number (88927104).

Almost surely, 2^1021462989 is an apocalyptic number.

It is an amenable number.

1021462989 is a deficient number, since it is larger than the sum of its proper divisors (401370675).

1021462989 is a wasteful number, since it uses less digits than its factorization.

1021462989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132448.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1021462989 is about 31960.3346196500. The cubic root of 1021462989 is about 1007.1037469532.

The spelling of 1021462989 in words is "one billion, twenty-one million, four hundred sixty-two thousand, nine hundred eighty-nine".