891496944 has 240 divisors, whose sum is σ = 2818021024. Its totient is φ = 261273600.

The previous prime is 891496943. The next prime is 891496961. The reversal of 891496944 is 449694198.

It is a happy number.

It is a super-2 number, since 2×891496944² = 1589533602322678272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891496943) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4224999 + ... + 4225209.

Almost surely, 2^891496944 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 891496944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1409010512).

891496944 is an abundant number, since it is smaller than the sum of its proper divisors (1926524080).

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

891496944 is a wasteful number, since it uses less digits than its factorization.

891496944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 327 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 891496944 is about 29857.9460780543. The cubic root of 891496944 is about 962.4391619274.

The spelling of 891496944 in words is "eight hundred ninety-one million, four hundred ninety-six thousand, nine hundred forty-four".