89961423 has 4 divisors (see below), whose sum is σ = 119948568. Its totient is φ = 59974280.

The previous prime is 89961419. The next prime is 89961449. The reversal of 89961423 is 32416998.

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

It is a cyclic number.

It is not a de Polignac number, because 89961423 - 2² = 89961419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89961413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14993568 + ... + 14993573.

It is an arithmetic number, because the mean of its divisors is an integer number (29987142).

Almost surely, 2^89961423 is an apocalyptic number.

89961423 is a deficient number, since it is larger than the sum of its proper divisors (29987145).

89961423 is a wasteful number, since it uses less digits than its factorization.

89961423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29987144.

The product of its digits is 93312, while the sum is 42.

The square root of 89961423 is about 9484.7995761640. The cubic root of 89961423 is about 448.0764361900.

The spelling of 89961423 in words is "eighty-nine million, nine hundred sixty-one thousand, four hundred twenty-three".