891494400 has 168 divisors, whose sum is σ = 2949726384. Its totient is φ = 237568000.

The previous prime is 891494393. The next prime is 891494411. The reversal of 891494400 is 4494198.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 613675 + ... + 615125.

Almost surely, 2^891494400 is an apocalyptic number.

891494400 is a gapful number since it is divisible by the number (80) 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 891494400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474863192).

891494400 is an abundant number, since it is smaller than the sum of its proper divisors (2058231984).

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

891494400 is a wasteful number, since it uses less digits than its factorization.

891494400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490 (or 1461 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 891494400 is about 29857.9034762992. The cubic root of 891494400 is about 962.4382464456.

The spelling of 891494400 in words is "eight hundred ninety-one million, four hundred ninety-four thousand, four hundred".