42965989 has 4 divisors (see below), whose sum is σ = 46872000. Its totient is φ = 39059980.

The previous prime is 42965981. The next prime is 42965999. The reversal of 42965989 is 98956924.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42965989 - 2³ = 42965981 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 (42965981) 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, 1952989 + ... + 1953010.

It is an arithmetic number, because the mean of its divisors is an integer number (11718000).

Almost surely, 2^42965989 is an apocalyptic number.

It is an amenable number.

42965989 is a deficient number, since it is larger than the sum of its proper divisors (3906011).

42965989 is a wasteful number, since it uses less digits than its factorization.

42965989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906010.

The product of its digits is 1399680, while the sum is 52.

The square root of 42965989 is about 6554.8446968635. The cubic root of 42965989 is about 350.2474141779.

The spelling of 42965989 in words is "forty-two million, nine hundred sixty-five thousand, nine hundred eighty-nine".