1199253440 has 336 divisors, whose sum is σ = 3846515040. Its totient is φ = 350945280.

The previous prime is 1199253439. The next prime is 1199253467. The reversal of 1199253440 is 443529911.

It is a junction number, because it is equal to n+sod(n) for n = 1199253394 and 1199253403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2931956 + ... + 2932364.

Almost surely, 2^1199253440 is an apocalyptic number.

1199253440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1199253440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1923257520).

1199253440 is an abundant number, since it is smaller than the sum of its proper divisors (2647261600).

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

1199253440 is a wasteful number, since it uses less digits than its factorization.

1199253440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1199253440 is about 34630.2388094567. The cubic root of 1199253440 is about 1062.4381516940.

The spelling of 1199253440 in words is "one billion, one hundred ninety-nine million, two hundred fifty-three thousand, four hundred forty".