890735389 has 4 divisors (see below), whose sum is σ = 890828224. Its totient is φ = 890642556.

The previous prime is 890735387. The next prime is 890735393. The reversal of 890735389 is 983537098.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 890735389 - 2¹ = 890735387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890735387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30117 + ... + 51850.

It is an arithmetic number, because the mean of its divisors is an integer number (222707056).

Almost surely, 2^890735389 is an apocalyptic number.

It is an amenable number.

890735389 is a deficient number, since it is larger than the sum of its proper divisors (92835).

890735389 is a wasteful number, since it uses less digits than its factorization.

890735389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92834.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 890735389 is about 29845.1903830416. The cubic root of 890735389 is about 962.1650315575.

The spelling of 890735389 in words is "eight hundred ninety million, seven hundred thirty-five thousand, three hundred eighty-nine".