928969861 has 2 divisors, whose sum is σ = 928969862. Its totient is φ = 928969860.

The previous prime is 928969823. The next prime is 928969889. The reversal of 928969861 is 168969829.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 926045761 + 2924100 = 30431^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 928969861 - 2¹⁷ = 928838789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 928969796 and 928969805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (928969801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 464484930 + 464484931.

It is an arithmetic number, because the mean of its divisors is an integer number (464484931).

Almost surely, 2^928969861 is an apocalyptic number.

It is an amenable number.

928969861 is a deficient number, since it is larger than the sum of its proper divisors (1).

928969861 is an equidigital number, since it uses as much as digits as its factorization.

928969861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 58.

The square root of 928969861 is about 30479.0068899891. The cubic root of 928969861 is about 975.7394735547.

The spelling of 928969861 in words is "nine hundred twenty-eight million, nine hundred sixty-nine thousand, eight hundred sixty-one".