1402109689 has 4 divisors (see below), whose sum is σ = 1425874320. Its totient is φ = 1378345060.

The previous prime is 1402109659. The next prime is 1402109701. The reversal of 1402109689 is 9869012041.

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 1402109689 - 2¹⁹ = 1401585401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402109609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11882227 + ... + 11882344.

It is an arithmetic number, because the mean of its divisors is an integer number (356468580).

Almost surely, 2^1402109689 is an apocalyptic number.

It is an amenable number.

1402109689 is a deficient number, since it is larger than the sum of its proper divisors (23764631).

1402109689 is an equidigital number, since it uses as much as digits as its factorization.

1402109689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23764630.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1402109689 is about 37444.7551601022. The cubic root of 1402109689 is about 1119.2505852385.

The spelling of 1402109689 in words is "one billion, four hundred two million, one hundred nine thousand, six hundred eighty-nine".