890802149 has 2 divisors, whose sum is σ = 890802150. Its totient is φ = 890802148.

The previous prime is 890802131. The next prime is 890802161. The reversal of 890802149 is 941208098.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 822657124 + 68145025 = 28682^2 + 8255^2 .

It is a cyclic number.

It is not a de Polignac number, because 890802149 - 2²⁰ = 889753573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890802109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445401074 + 445401075.

It is an arithmetic number, because the mean of its divisors is an integer number (445401075).

Almost surely, 2^890802149 is an apocalyptic number.

It is an amenable number.

890802149 is a deficient number, since it is larger than the sum of its proper divisors (1).

890802149 is an equidigital number, since it uses as much as digits as its factorization.

890802149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 890802149 is about 29846.3088002520. The cubic root of 890802149 is about 962.1890688244.

The spelling of 890802149 in words is "eight hundred ninety million, eight hundred two thousand, one hundred forty-nine".