6989490 has 40 divisors (see below), whose sum is σ = 18796140. Its totient is φ = 1863648.

The previous prime is 6989461. The next prime is 6989491. The reversal of 6989490 is 949896.

It can be written as a sum of positive squares in 2 ways, for example, as 6953769 + 35721 = 2637^2 + 189^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (6989491) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3505 + ... + 5124.

Almost surely, 2^6989490 is an apocalyptic number.

6989490 is an abundant number, since it is smaller than the sum of its proper divisors (11806650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6989490 is a wasteful number, since it uses less digits than its factorization.

6989490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8648 (or 8639 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 6989490 is about 2643.7643616631. The cubic root of 6989490 is about 191.1973326717.

The spelling of 6989490 in words is "six million, nine hundred eighty-nine thousand, four hundred ninety".