42953389 has 4 divisors (see below), whose sum is σ = 42971580. Its totient is φ = 42935200.

The previous prime is 42953387. The next prime is 42953399. The reversal of 42953389 is 98335924.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37393225 + 5560164 = 6115^2 + 2358^2 .

It is a cyclic number.

It is not a de Polignac number, because 42953389 - 2¹ = 42953387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42953387) 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, 4912 + ... + 10489.

It is an arithmetic number, because the mean of its divisors is an integer number (10742895).

Almost surely, 2^42953389 is an apocalyptic number.

It is an amenable number.

42953389 is a deficient number, since it is larger than the sum of its proper divisors (18191).

42953389 is a wasteful number, since it uses less digits than its factorization.

42953389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18190.

The product of its digits is 233280, while the sum is 43.

The square root of 42953389 is about 6553.8835052204. The cubic root of 42953389 is about 350.2131735380.

The spelling of 42953389 in words is "forty-two million, nine hundred fifty-three thousand, three hundred eighty-nine".