1010023989 has 16 divisors (see below), whose sum is σ = 1497076224. Its totient is φ = 601502400.

The previous prime is 1010023981. The next prime is 1010023991. The reversal of 1010023989 is 9893200101.

It is not a de Polignac number, because 1010023989 - 2³ = 1010023981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010023981) 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, 416502 + ... + 418919.

It is an arithmetic number, because the mean of its divisors is an integer number (93567264).

Almost surely, 2^1010023989 is an apocalyptic number.

It is an amenable number.

1010023989 is a deficient number, since it is larger than the sum of its proper divisors (487052235).

1010023989 is a wasteful number, since it uses less digits than its factorization.

1010023989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835468.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1010023989 is about 31780.8745789036. The cubic root of 1010023989 is about 1003.3302269440.

The spelling of 1010023989 in words is "one billion, ten million, twenty-three thousand, nine hundred eighty-nine".