1198440 has 48 divisors (see below), whose sum is σ = 3896100. Its totient is φ = 319488.

The previous prime is 1198433. The next prime is 1198447. The reversal of 1198440 is 448911.

It is an interprime number because it is at equal distance from previous prime (1198433) and next prime (1198447).

It can be written as a sum of positive squares in 2 ways, for example, as 1179396 + 19044 = 1086^2 + 138^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1198447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1305 + ... + 2024.

2^1198440 is an apocalyptic number.

1198440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1198440 is an abundant number, since it is smaller than the sum of its proper divisors (2697660).

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

1198440 is a wasteful number, since it uses less digits than its factorization.

1198440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346 (or 3339 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1198440 is about 1094.7328441223. The cubic root of 1198440 is about 106.2197884115.

The spelling of 1198440 in words is "one million, one hundred ninety-eight thousand, four hundred forty".