91863948 has 24 divisors (see below), whose sum is σ = 233835840. Its totient is φ = 27837520.

The previous prime is 91863923. The next prime is 91863973. The reversal of 91863948 is 84936819.

It is an interprime number because it is at equal distance from previous prime (91863923) and next prime (91863973).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 91863897 and 91863906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347838 + ... + 348101.

It is an arithmetic number, because the mean of its divisors is an integer number (9743160).

Almost surely, 2^91863948 is an apocalyptic number.

It is an amenable number.

91863948 is an abundant number, since it is smaller than the sum of its proper divisors (141971892).

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

91863948 is a wasteful number, since it uses less digits than its factorization.

91863948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695957 (or 695955 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 91863948 is about 9584.5682218867. The cubic root of 91863948 is about 451.2131021106.

The spelling of 91863948 in words is "ninety-one million, eight hundred sixty-three thousand, nine hundred forty-eight".