70001443 has 4 divisors (see below), whose sum is σ = 73045008. Its totient is φ = 66957880.

The previous prime is 70001431. The next prime is 70001479. The reversal of 70001443 is 34410007.

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: 34410007 = 19 ⋅1811053.

It is a cyclic number.

It is not a de Polignac number, because 70001443 - 2⁵ = 70001411 is a prime.

It is a Duffinian number.

70001443 is a modest number, since divided by 1443 gives 70 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 70001443.

It is not an unprimeable number, because it can be changed into a prime (70001483) 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, 1521748 + ... + 1521793.

It is an arithmetic number, because the mean of its divisors is an integer number (18261252).

Almost surely, 2^70001443 is an apocalyptic number.

70001443 is a deficient number, since it is larger than the sum of its proper divisors (3043565).

70001443 is a wasteful number, since it uses less digits than its factorization.

70001443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043564.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 70001443 is about 8366.6865006405. The cubic root of 70001443 is about 412.1313618732.

The spelling of 70001443 in words is "seventy million, one thousand, four hundred forty-three".