89732639 has 2 divisors, whose sum is σ = 89732640. Its totient is φ = 89732638.

The previous prime is 89732609. The next prime is 89732677. The reversal of 89732639 is 93623798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89732639 - 2¹⁶ = 89667103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89732593 and 89732602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89732609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44866319 + 44866320.

It is an arithmetic number, because the mean of its divisors is an integer number (44866320).

Almost surely, 2^89732639 is an apocalyptic number.

89732639 is a deficient number, since it is larger than the sum of its proper divisors (1).

89732639 is an equidigital number, since it uses as much as digits as its factorization.

89732639 is an odious number, because the sum of its binary digits is odd.

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

The square root of 89732639 is about 9472.7313378983. The cubic root of 89732639 is about 447.6962741896.

The spelling of 89732639 in words is "eighty-nine million, seven hundred thirty-two thousand, six hundred thirty-nine".