70395289 has 4 divisors (see below), whose sum is σ = 71723556. Its totient is φ = 69067024.

The previous prime is 70395263. The next prime is 70395307. The reversal of 70395289 is 98259307.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98259307 = 1871 ⋅52517.

It can be written as a sum of positive squares in 2 ways, for example, as 42146064 + 28249225 = 6492^2 + 5315^2 .

It is a cyclic number.

It is not a de Polignac number, because 70395289 - 2⁹ = 70394777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70395229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664054 + ... + 664159.

It is an arithmetic number, because the mean of its divisors is an integer number (17930889).

Almost surely, 2^70395289 is an apocalyptic number.

It is an amenable number.

70395289 is a deficient number, since it is larger than the sum of its proper divisors (1328267).

70395289 is a wasteful number, since it uses less digits than its factorization.

70395289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328266.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 70395289 is about 8390.1900455234. The cubic root of 70395289 is about 412.9028356142.

The spelling of 70395289 in words is "seventy million, three hundred ninety-five thousand, two hundred eighty-nine".