40086290 has 8 divisors (see below), whose sum is σ = 72155340. Its totient is φ = 16034512.

The previous prime is 40086269. The next prime is 40086313. The reversal of 40086290 is 9268004.

It can be written as a sum of positive squares in 2 ways, for example, as 36372961 + 3713329 = 6031^2 + 1927^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2004305 + ... + 2004324.

Almost surely, 2^40086290 is an apocalyptic number.

40086290 is a deficient number, since it is larger than the sum of its proper divisors (32069050).

40086290 is a wasteful number, since it uses less digits than its factorization.

40086290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008636.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 40086290 is about 6331.3734686875. The cubic root of 40086290 is about 342.2409357485.

The spelling of 40086290 in words is "forty million, eighty-six thousand, two hundred ninety".