1172649440 has 24 divisors (see below), whose sum is σ = 2770384680. Its totient is φ = 469059712.

The previous prime is 1172649427. The next prime is 1172649449. The reversal of 1172649440 is 449462711.

It is a junction number, because it is equal to n+sod(n) for n = 1172649394 and 1172649403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172649449) 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, 3664370 + ... + 3664689.

It is an arithmetic number, because the mean of its divisors is an integer number (115432695).

Almost surely, 2^1172649440 is an apocalyptic number.

1172649440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172649440 is an abundant number, since it is smaller than the sum of its proper divisors (1597735240).

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

1172649440 is an equidigital number, since it uses as much as digits as its factorization.

1172649440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7329074 (or 7329066 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1172649440 is about 34243.9693960849. The cubic root of 1172649440 is about 1054.5230251058.

The spelling of 1172649440 in words is "one billion, one hundred seventy-two million, six hundred forty-nine thousand, four hundred forty".