88091421 has 8 divisors (see below), whose sum is σ = 128133024. Its totient is φ = 53388720.

The previous prime is 88091417. The next prime is 88091431. The reversal of 88091421 is 12419088.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 88091421 - 2² = 88091417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2669437 = 88091421 / (8 + 8 + 0 + 9 + 1 + 4 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88091431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1334686 + ... + 1334751.

It is an arithmetic number, because the mean of its divisors is an integer number (16016628).

Almost surely, 2^88091421 is an apocalyptic number.

It is an amenable number.

88091421 is a deficient number, since it is larger than the sum of its proper divisors (40041603).

88091421 is a wasteful number, since it uses less digits than its factorization.

88091421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669451.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 88091421 is about 9385.7030104303. The cubic root of 88091421 is about 444.9499939601.

The spelling of 88091421 in words is "eighty-eight million, ninety-one thousand, four hundred twenty-one".