91283408 has 10 divisors (see below), whose sum is σ = 176861634. Its totient is φ = 45641696.

The previous prime is 91283399. The next prime is 91283417. The reversal of 91283408 is 80438219.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91283399) and next prime (91283417).

It can be written as a sum of positive squares in only one way, i.e., 62853184 + 28430224 = 7928^2 + 5332^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2852591 + ... + 2852622.

Almost surely, 2^91283408 is an apocalyptic number.

It is an amenable number.

91283408 is a deficient number, since it is larger than the sum of its proper divisors (85578226).

91283408 is a wasteful number, since it uses less digits than its factorization.

91283408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5705221 (or 5705215 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 91283408 is about 9554.2350818891. The cubic root of 91283408 is about 450.2606029605.

The spelling of 91283408 in words is "ninety-one million, two hundred eighty-three thousand, four hundred eight".