9902269440 has 616 divisors, whose sum is σ = 40809647040. Its totient is φ = 2257403904.

The previous prime is 9902269423. The next prime is 9902269459. The reversal of 9902269440 is 449622099.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 26127171 + ... + 26127549.

Almost surely, 2^9902269440 is an apocalyptic number.

9902269440 is a gapful number since it is divisible by the number (90) 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 9902269440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20404823520).

9902269440 is an abundant number, since it is smaller than the sum of its proper divisors (30907377600).

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

9902269440 is an equidigital number, since it uses as much as digits as its factorization.

9902269440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 9902269440 is about 99510.1474222604. The cubic root of 9902269440 is about 2147.3932308188.

The spelling of 9902269440 in words is "nine billion, nine hundred two million, two hundred sixty-nine thousand, four hundred forty".