89143405 has 16 divisors (see below), whose sum is σ = 115852464. Its totient is φ = 65456640.

The previous prime is 89143399. The next prime is 89143451. The reversal of 89143405 is 50434198.

It can be written as a sum of positive squares in 8 ways, for example, as 59691076 + 29452329 = 7726^2 + 5427^2 .

It is not a de Polignac number, because 89143405 - 2¹⁷ = 89012333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7977 + ... + 15553.

It is an arithmetic number, because the mean of its divisors is an integer number (7240779).

Almost surely, 2^89143405 is an apocalyptic number.

It is an amenable number.

89143405 is a deficient number, since it is larger than the sum of its proper divisors (26709059).

89143405 is a wasteful number, since it uses less digits than its factorization.

89143405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7776.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 89143405 is about 9441.5785226836. The cubic root of 89143405 is about 446.7141811661.

The spelling of 89143405 in words is "eighty-nine million, one hundred forty-three thousand, four hundred five".