40398449 has 8 divisors (see below), whose sum is σ = 49721280. Its totient is φ = 31963536.

The previous prime is 40398439. The next prime is 40398461. The reversal of 40398449 is 94489304.

40398449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40398449 - 2⁴ = 40398433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40398439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221879 + ... + 222060.

It is an arithmetic number, because the mean of its divisors is an integer number (6215160).

Almost surely, 2^40398449 is an apocalyptic number.

It is an amenable number.

40398449 is a deficient number, since it is larger than the sum of its proper divisors (9322831).

40398449 is a wasteful number, since it uses less digits than its factorization.

40398449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443959.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 40398449 is about 6355.9774228674. The cubic root of 40398449 is about 343.1270032055.

The spelling of 40398449 in words is "forty million, three hundred ninety-eight thousand, four hundred forty-nine".