40238705 has 8 divisors (see below), whose sum is σ = 52000872. Its totient is φ = 29714688.

The previous prime is 40238699. The next prime is 40238717. The reversal of 40238705 is 50783204.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 712336 + 39526369 = 844^2 + 6287^2 .

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 40238705 - 2⁶ = 40238641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309464 + ... + 309593.

It is an arithmetic number, because the mean of its divisors is an integer number (6500109).

Almost surely, 2^40238705 is an apocalyptic number.

It is an amenable number.

40238705 is a deficient number, since it is larger than the sum of its proper divisors (11762167).

40238705 is a wasteful number, since it uses less digits than its factorization.

40238705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619075.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 40238705 is about 6343.3985370620. The cubic root of 40238705 is about 342.6741402269.

The spelling of 40238705 in words is "forty million, two hundred thirty-eight thousand, seven hundred five".