890738529 has 4 divisors (see below), whose sum is σ = 1187651376. Its totient is φ = 593825684.

The previous prime is 890738491. The next prime is 890738533. The reversal of 890738529 is 925837098.

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 a de Polignac number, because none of the positive numbers 2^k-890738529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (890731529) 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, 148456419 + ... + 148456424.

It is an arithmetic number, because the mean of its divisors is an integer number (296912844).

Almost surely, 2^890738529 is an apocalyptic number.

It is an amenable number.

890738529 is a deficient number, since it is larger than the sum of its proper divisors (296912847).

890738529 is a wasteful number, since it uses less digits than its factorization.

890738529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296912846.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 890738529 is about 29845.2429877862. The cubic root of 890738529 is about 962.1661621569.

The spelling of 890738529 in words is "eight hundred ninety million, seven hundred thirty-eight thousand, five hundred twenty-nine".