40690234 has 8 divisors (see below), whose sum is σ = 65730420. Its totient is φ = 18780096.

The previous prime is 40690217. The next prime is 40690249. The reversal of 40690234 is 43209604.

40690234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 40132225 + 558009 = 6335^2 + 747^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782479 + ... + 782530.

Almost surely, 2^40690234 is an apocalyptic number.

40690234 is a deficient number, since it is larger than the sum of its proper divisors (25040186).

40690234 is a wasteful number, since it uses less digits than its factorization.

40690234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565024.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 40690234 is about 6378.8897153031. The cubic root of 40690234 is about 343.9511209170.

Adding to 40690234 its reverse (43209604), we get a palindrome (83899838).

The spelling of 40690234 in words is "forty million, six hundred ninety thousand, two hundred thirty-four".