87944745 has 32 divisors (see below), whose sum is σ = 165166848. Its totient is φ = 39115008.

The previous prime is 87944743. The next prime is 87944767. The reversal of 87944745 is 54744978.

It is not a de Polignac number, because 87944745 - 2¹ = 87944743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87944694 and 87944703.

It is not an unprimeable number, because it can be changed into a prime (87944743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7434 + ... + 15203.

It is an arithmetic number, because the mean of its divisors is an integer number (5161464).

Almost surely, 2^87944745 is an apocalyptic number.

It is an amenable number.

87944745 is a deficient number, since it is larger than the sum of its proper divisors (77222103).

87944745 is a wasteful number, since it uses less digits than its factorization.

87944745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22689.

The product of its digits is 1128960, while the sum is 48.

The square root of 87944745 is about 9377.8859558005. The cubic root of 87944745 is about 444.7029031526.

The spelling of 87944745 in words is "eighty-seven million, nine hundred forty-four thousand, seven hundred forty-five".