1402319889 has 6 divisors (see below), whose sum is σ = 2025573186. Its totient is φ = 934879920.

The previous prime is 1402319881. The next prime is 1402319923. The reversal of 1402319889 is 9889132041.

It can be written as a sum of positive squares in only one way, i.e., 835499025 + 566820864 = 28905^2 + 23808^2 .

It is not a de Polignac number, because 1402319889 - 2³ = 1402319881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1402319881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77906652 + ... + 77906669.

It is an arithmetic number, because the mean of its divisors is an integer number (337595531).

Almost surely, 2^1402319889 is an apocalyptic number.

It is an amenable number.

1402319889 is a deficient number, since it is larger than the sum of its proper divisors (623253297).

1402319889 is a wasteful number, since it uses less digits than its factorization.

1402319889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155813327 (or 155813324 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1402319889 is about 37447.5618565482. The cubic root of 1402319889 is about 1119.3065139862.

The spelling of 1402319889 in words is "one billion, four hundred two million, three hundred nineteen thousand, eight hundred eighty-nine".