1009769976 has 168 divisors, whose sum is σ = 2937852840. Its totient is φ = 325192320.

The previous prime is 1009769951. The next prime is 1009769977. The reversal of 1009769976 is 6799679001.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009769977) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 9803541 + ... + 9803643.

Almost surely, 2^1009769976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1009769976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1468926420).

1009769976 is an abundant number, since it is smaller than the sum of its proper divisors (1928082864).

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

1009769976 is an equidigital number, since it uses as much as digits as its factorization.

1009769976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 1285956, while the sum is 54.

The square root of 1009769976 is about 31776.8780090178. The cubic root of 1009769976 is about 1003.2461100346.

The spelling of 1009769976 in words is "one billion, nine million, seven hundred sixty-nine thousand, nine hundred seventy-six".