40309049 has 8 divisors (see below), whose sum is σ = 44053248. Its totient is φ = 36578160.

The previous prime is 40309019. The next prime is 40309063. The reversal of 40309049 is 94090304.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40309049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40309019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3659 + ... + 9695.

It is an arithmetic number, because the mean of its divisors is an integer number (5506656).

Almost surely, 2^40309049 is an apocalyptic number.

It is an amenable number.

40309049 is a deficient number, since it is larger than the sum of its proper divisors (3744199).

40309049 is a wasteful number, since it uses less digits than its factorization.

40309049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6655.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 40309049 is about 6348.9407777991. The cubic root of 40309049 is about 342.8737079215.

The spelling of 40309049 in words is "forty million, three hundred nine thousand, forty-nine".