91463400 has 432 divisors, whose sum is σ = 384534540. Its totient is φ = 19353600.

The previous prime is 91463389. The next prime is 91463401. The reversal of 91463400 is 436419.

It can be written as a sum of positive squares in 6 ways, for example, as 20196036 + 71267364 = 4494^2 + 8442^2 .

It is not an unprimeable number, because it can be changed into a prime (91463401) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1499370 + ... + 1499430.

Almost surely, 2^91463400 is an apocalyptic number.

91463400 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 91463400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192267270).

91463400 is an abundant number, since it is smaller than the sum of its proper divisors (293071140).

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

91463400 is a wasteful number, since it uses less digits than its factorization.

91463400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 91463400 is about 9563.6499308580. The cubic root of 91463400 is about 450.5563489222.

Adding to 91463400 its reverse (436419), we get a palindrome (91899819).

The spelling of 91463400 in words is "ninety-one million, four hundred sixty-three thousand, four hundred".