70422439 has 4 divisors (see below), whose sum is σ = 71106256. Its totient is φ = 69738624.

The previous prime is 70422413. The next prime is 70422463. The reversal of 70422439 is 93422407.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70422439 - 2⁷ = 70422311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70422439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70422409) 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, 341754 + ... + 341959.

It is an arithmetic number, because the mean of its divisors is an integer number (17776564).

Almost surely, 2^70422439 is an apocalyptic number.

70422439 is a deficient number, since it is larger than the sum of its proper divisors (683817).

70422439 is a wasteful number, since it uses less digits than its factorization.

70422439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683816.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 70422439 is about 8391.8078505171. The cubic root of 70422439 is about 412.9559114722.

The spelling of 70422439 in words is "seventy million, four hundred twenty-two thousand, four hundred thirty-nine".