1209677040 has 480 divisors, whose sum is σ = 4939683840. Its totient is φ = 261273600.

The previous prime is 1209677017. The next prime is 1209677081. The reversal of 1209677040 is 407769021.

It is a happy number.

It is a super-2 number, since 2×1209677040² = 2926637082206323200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1209676986 and 1209677004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3191571 + ... + 3191949.

It is an arithmetic number, because the mean of its divisors is an integer number (10291008).

Almost surely, 2^1209677040 is an apocalyptic number.

1209677040 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 1209677040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2469841920).

1209677040 is an abundant number, since it is smaller than the sum of its proper divisors (3730006800).

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

1209677040 is a wasteful number, since it uses less digits than its factorization.

1209677040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 1209677040 is about 34780.4117284428. The cubic root of 1209677040 is about 1065.5074220224.

The spelling of 1209677040 in words is "one billion, two hundred nine million, six hundred seventy-seven thousand, forty".