7042989 has 4 divisors (see below), whose sum is σ = 9390656. Its totient is φ = 4695324.

The previous prime is 7042961. The next prime is 7042993. The reversal of 7042989 is 9892407.

7042989 = 617² + 618² + ... + 634².

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 not a de Polignac number, because 7042989 - 2¹⁷ = 6911917 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7042949) 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, 1173829 + ... + 1173834.

It is an arithmetic number, because the mean of its divisors is an integer number (2347664).

Almost surely, 2^7042989 is an apocalyptic number.

It is an amenable number.

7042989 is a deficient number, since it is larger than the sum of its proper divisors (2347667).

7042989 is a wasteful number, since it uses less digits than its factorization.

7042989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347666.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 7042989 is about 2653.8630333911. The cubic root of 7042989 is about 191.6839145999.

The spelling of 7042989 in words is "seven million, forty-two thousand, nine hundred eighty-nine".