1099960 has 32 divisors (see below), whose sum is σ = 2507760. Its totient is φ = 434176.

The previous prime is 1099957. The next prime is 1099961. The reversal of 1099960 is 699901.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4152 + ... + 4408.

2^1099960 is an apocalyptic number.

1099960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1099960 is an abundant number, since it is smaller than the sum of its proper divisors (1407800).

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

1099960 is a wasteful number, since it uses less digits than its factorization.

1099960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 1099960 is about 1048.7897787450. The cubic root of 1099960 is about 103.2267602818.

The spelling of 1099960 in words is "one million, ninety-nine thousand, nine hundred sixty".