42989311 has 4 divisors (see below), whose sum is σ = 45518112. Its totient is φ = 40460512.

The previous prime is 42989299. The next prime is 42989327. The reversal of 42989311 is 11398924.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42989311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42989371) 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, 1264375 + ... + 1264408.

It is an arithmetic number, because the mean of its divisors is an integer number (11379528).

Almost surely, 2^42989311 is an apocalyptic number.

42989311 is a deficient number, since it is larger than the sum of its proper divisors (2528801).

42989311 is a wasteful number, since it uses less digits than its factorization.

42989311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528800.

The product of its digits is 15552, while the sum is 37.

The square root of 42989311 is about 6556.6234450363. The cubic root of 42989311 is about 350.3107743137.

The spelling of 42989311 in words is "forty-two million, nine hundred eighty-nine thousand, three hundred eleven".