7099940 has 12 divisors (see below), whose sum is σ = 14909916. Its totient is φ = 2839968.

The previous prime is 7099927. The next prime is 7099949. The reversal of 7099940 is 499907.

It can be written as a sum of positive squares in 2 ways, for example, as 1378276 + 5721664 = 1174^2 + 2392^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7099894 and 7099903.

It is not an unprimeable number, because it can be changed into a prime (7099949) 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, 177479 + ... + 177518.

It is an arithmetic number, because the mean of its divisors is an integer number (1242493).

Almost surely, 2^7099940 is an apocalyptic number.

It is an amenable number.

7099940 is an abundant number, since it is smaller than the sum of its proper divisors (7809976).

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

7099940 is a wasteful number, since it uses less digits than its factorization.

7099940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355006 (or 355004 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 7099940 is about 2664.5712600717. The cubic root of 7099940 is about 192.1991928682.

The spelling of 7099940 in words is "seven million, ninety-nine thousand, nine hundred forty".