7980990 has 32 divisors (see below), whose sum is σ = 20282400. Its totient is φ = 2002944.

The previous prime is 7980983. The next prime is 7980997. The reversal of 7980990 is 990897.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7980983) and next prime (7980997).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7980997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7315 + ... + 8334.

It is an arithmetic number, because the mean of its divisors is an integer number (633825).

Almost surely, 2^7980990 is an apocalyptic number.

7980990 is an abundant number, since it is smaller than the sum of its proper divisors (12301410).

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

7980990 is a wasteful number, since it uses less digits than its factorization.

7980990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15676.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 7980990 is about 2825.0646010313. The cubic root of 7980990 is about 199.8414576882.

The spelling of 7980990 in words is "seven million, nine hundred eighty thousand, nine hundred ninety".