88454991 has 4 divisors (see below), whose sum is σ = 117939992. Its totient is φ = 58969992.

The previous prime is 88454963. The next prime is 88455041. The reversal of 88454991 is 19945488.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 88454991 - 2¹¹ = 88452943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88454991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88454921) 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, 14742496 + ... + 14742501.

It is an arithmetic number, because the mean of its divisors is an integer number (29484998).

Almost surely, 2^88454991 is an apocalyptic number.

88454991 is a deficient number, since it is larger than the sum of its proper divisors (29485001).

88454991 is a wasteful number, since it uses less digits than its factorization.

88454991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29485000.

The product of its digits is 414720, while the sum is 48.

The square root of 88454991 is about 9405.0513555217. The cubic root of 88454991 is about 445.5612847603.

The spelling of 88454991 in words is "eighty-eight million, four hundred fifty-four thousand, nine hundred ninety-one".