89540387 has 2 divisors, whose sum is σ = 89540388. Its totient is φ = 89540386.

The previous prime is 89540383. The next prime is 89540419. The reversal of 89540387 is 78304598.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89540387 - 2² = 89540383 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89540383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44770193 + 44770194.

It is an arithmetic number, because the mean of its divisors is an integer number (44770194).

Almost surely, 2^89540387 is an apocalyptic number.

89540387 is a deficient number, since it is larger than the sum of its proper divisors (1).

89540387 is an equidigital number, since it uses as much as digits as its factorization.

89540387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 89540387 is about 9462.5782427412. The cubic root of 89540387 is about 447.3763161195.

The spelling of 89540387 in words is "eighty-nine million, five hundred forty thousand, three hundred eighty-seven".