70289249 has 4 divisors (see below), whose sum is σ = 70653636. Its totient is φ = 69924864.

The previous prime is 70289221. The next prime is 70289251. The reversal of 70289249 is 94298207.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94298207 = 983 ⋅95929.

It can be written as a sum of positive squares in 2 ways, for example, as 40094224 + 30195025 = 6332^2 + 5495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70289249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70289209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181904 + ... + 182289.

It is an arithmetic number, because the mean of its divisors is an integer number (17663409).

Almost surely, 2^70289249 is an apocalyptic number.

It is an amenable number.

70289249 is a deficient number, since it is larger than the sum of its proper divisors (364387).

70289249 is a wasteful number, since it uses less digits than its factorization.

70289249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364386.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 70289249 is about 8383.8683792149. The cubic root of 70289249 is about 412.6954059195.

The spelling of 70289249 in words is "seventy million, two hundred eighty-nine thousand, two hundred forty-nine".