40598389 has 4 divisors (see below), whose sum is σ = 43721356. Its totient is φ = 37475424.

The previous prime is 40598339. The next prime is 40598401. The reversal of 40598389 is 98389504.

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 11276164 + 29322225 = 3358^2 + 5415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40598389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40598339) 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, 1561464 + ... + 1561489.

It is an arithmetic number, because the mean of its divisors is an integer number (10930339).

Almost surely, 2^40598389 is an apocalyptic number.

It is an amenable number.

40598389 is a deficient number, since it is larger than the sum of its proper divisors (3122967).

40598389 is a wasteful number, since it uses less digits than its factorization.

40598389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122966.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 40598389 is about 6371.6865114348. The cubic root of 40598389 is about 343.6921399475.

The spelling of 40598389 in words is "forty million, five hundred ninety-eight thousand, three hundred eighty-nine".