897039623 has 2 divisors, whose sum is σ = 897039624. Its totient is φ = 897039622.

The previous prime is 897039601. The next prime is 897039643. The reversal of 897039623 is 326930798.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 897039623 - 2¹⁶ = 896974087 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897039643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448519811 + 448519812.

It is an arithmetic number, because the mean of its divisors is an integer number (448519812).

Almost surely, 2^897039623 is an apocalyptic number.

897039623 is a deficient number, since it is larger than the sum of its proper divisors (1).

897039623 is an equidigital number, since it uses as much as digits as its factorization.

897039623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 897039623 is about 29950.6197431706. The cubic root of 897039623 is about 964.4296245485.

The spelling of 897039623 in words is "eight hundred ninety-seven million, thirty-nine thousand, six hundred twenty-three".