42953789 has 2 divisors, whose sum is σ = 42953790. Its totient is φ = 42953788.

The previous prime is 42953753. The next prime is 42953809. The reversal of 42953789 is 98735924.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42797764 + 156025 = 6542^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 42953789 - 2¹⁶ = 42888253 is a prime.

It is a Chen prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42953749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21476894 + 21476895.

It is an arithmetic number, because the mean of its divisors is an integer number (21476895).

Almost surely, 2^42953789 is an apocalyptic number.

It is an amenable number.

42953789 is a deficient number, since it is larger than the sum of its proper divisors (1).

42953789 is an equidigital number, since it uses as much as digits as its factorization.

42953789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 42953789 is about 6553.9140214074. The cubic root of 42953789 is about 350.2142606453.

The spelling of 42953789 in words is "forty-two million, nine hundred fifty-three thousand, seven hundred eighty-nine".