91434404 has 12 divisors (see below), whose sum is σ = 160404300. Its totient is φ = 45604608.

The previous prime is 91434401. The next prime is 91434451. The reversal of 91434404 is 40443419.

It can be written as a sum of positive squares in 2 ways, for example, as 82446400 + 8988004 = 9080^2 + 2998^2 .

It is not an unprimeable number, because it can be changed into a prime (91434401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26309 + ... + 29580.

It is an arithmetic number, because the mean of its divisors is an integer number (13367025).

Almost surely, 2^91434404 is an apocalyptic number.

It is an amenable number.

91434404 is a deficient number, since it is larger than the sum of its proper divisors (68969896).

91434404 is a wasteful number, since it uses less digits than its factorization.

91434404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56302 (or 56300 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 91434404 is about 9562.1338622715. The cubic root of 91434404 is about 450.5087316505.

The spelling of 91434404 in words is "ninety-one million, four hundred thirty-four thousand, four hundred four".