89870155 has 8 divisors (see below), whose sum is σ = 110474784. Its totient is φ = 70142400.

The previous prime is 89870119. The next prime is 89870161. The reversal of 89870155 is 55107898.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89870155 - 2²¹ = 87773003 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218991 + ... + 219400.

It is an arithmetic number, because the mean of its divisors is an integer number (13809348).

Almost surely, 2^89870155 is an apocalyptic number.

89870155 is a deficient number, since it is larger than the sum of its proper divisors (20604629).

89870155 is a wasteful number, since it uses less digits than its factorization.

89870155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438437.

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 89870155 is about 9479.9870780503. The cubic root of 89870155 is about 447.9248568564.

The spelling of 89870155 in words is "eighty-nine million, eight hundred seventy thousand, one hundred fifty-five".