40024289 has 4 divisors (see below), whose sum is σ = 40049940. Its totient is φ = 39998640.

The previous prime is 40024267. The next prime is 40024297. The reversal of 40024289 is 98242004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6477025 + 33547264 = 2545^2 + 5792^2 .

It is a cyclic number.

It is not a de Polignac number, because 40024289 - 2²⁴ = 23247073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40024489) 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, 10322 + ... + 13659.

It is an arithmetic number, because the mean of its divisors is an integer number (10012485).

Almost surely, 2^40024289 is an apocalyptic number.

It is an amenable number.

40024289 is a deficient number, since it is larger than the sum of its proper divisors (25651).

40024289 is a wasteful number, since it uses less digits than its factorization.

40024289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25650.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 40024289 is about 6326.4752429769. The cubic root of 40024289 is about 342.0643980051.

The spelling of 40024289 in words is "forty million, twenty-four thousand, two hundred eighty-nine".