1001289390 has 16 divisors (see below), whose sum is σ = 2403094608. Its totient is φ = 267010496.

The previous prime is 1001289361. The next prime is 1001289397. The reversal of 1001289390 is 939821001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001289397) 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, 16688127 + ... + 16688186.

It is an arithmetic number, because the mean of its divisors is an integer number (150193413).

Almost surely, 2^1001289390 is an apocalyptic number.

1001289390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001289390 is an abundant number, since it is smaller than the sum of its proper divisors (1401805218).

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

1001289390 is a wasteful number, since it uses less digits than its factorization.

1001289390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33376323.

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

The square root of 1001289390 is about 31643.1570801651. The cubic root of 1001289390 is about 1000.4296120737.

The spelling of 1001289390 in words is "one billion, one million, two hundred eighty-nine thousand, three hundred ninety".