40079405 has 8 divisors (see below), whose sum is σ = 48521592. Its totient is φ = 31779328.

The previous prime is 40079371. The next prime is 40079437. The reversal of 40079405 is 50497004.

It can be written as a sum of positive squares in 4 ways, for example, as 866761 + 39212644 = 931^2 + 6262^2 .

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-40079405 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34904 + ... + 36033.

It is an arithmetic number, because the mean of its divisors is an integer number (6065199).

Almost surely, 2^40079405 is an apocalyptic number.

It is an amenable number.

40079405 is a deficient number, since it is larger than the sum of its proper divisors (8442187).

40079405 is a wasteful number, since it uses less digits than its factorization.

40079405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71055.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 40079405 is about 6330.8297244516. The cubic root of 40079405 is about 342.2213408217.

The spelling of 40079405 in words is "forty million, seventy-nine thousand, four hundred five".