40838290 has 8 divisors (see below), whose sum is σ = 73508940. Its totient is φ = 16335312.

The previous prime is 40838279. The next prime is 40838323. The reversal of 40838290 is 9283804.

It can be written as a sum of positive squares in 2 ways, for example, as 40793769 + 44521 = 6387^2 + 211^2 .

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

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, 2041905 + ... + 2041924.

Almost surely, 2^40838290 is an apocalyptic number.

40838290 is a deficient number, since it is larger than the sum of its proper divisors (32670650).

40838290 is a wasteful number, since it uses less digits than its factorization.

40838290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4083836.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 40838290 is about 6390.4843321927. The cubic root of 40838290 is about 344.3677842654.

The spelling of 40838290 in words is "forty million, eight hundred thirty-eight thousand, two hundred ninety".