890801389 has 2 divisors, whose sum is σ = 890801390. Its totient is φ = 890801388.

The previous prime is 890801363. The next prime is 890801413. The reversal of 890801389 is 983108098.

890801389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 708092100 + 182709289 = 26610^2 + 13517^2 .

It is a cyclic number.

It is not a de Polignac number, because 890801389 - 2¹⁷ = 890670317 is a prime.

It is a super-2 number, since 2×890801389² = 1587054229288658642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890801489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445400694 + 445400695.

It is an arithmetic number, because the mean of its divisors is an integer number (445400695).

Almost surely, 2^890801389 is an apocalyptic number.

It is an amenable number.

890801389 is a deficient number, since it is larger than the sum of its proper divisors (1).

890801389 is an equidigital number, since it uses as much as digits as its factorization.

890801389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 890801389 is about 29846.2960683566. The cubic root of 890801389 is about 962.1887951894.

The spelling of 890801389 in words is "eight hundred ninety million, eight hundred one thousand, three hundred eighty-nine".