240439490 has 16 divisors (see below), whose sum is σ = 455569920. Its totient is φ = 91113840.

The previous prime is 240439453. The next prime is 240439513. The reversal of 240439490 is 94934042.

It is a super-2 number, since 2×240439490² = 115622296702920200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 240439490.

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, 632546 + ... + 632925.

It is an arithmetic number, because the mean of its divisors is an integer number (28473120).

Almost surely, 2^240439490 is an apocalyptic number.

240439490 is a deficient number, since it is larger than the sum of its proper divisors (215130430).

240439490 is a wasteful number, since it uses less digits than its factorization.

240439490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265497.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 240439490 is about 15506.1113758415. Note that the first 3 decimals coincide. The cubic root of 240439490 is about 621.8256025509.

It can be divided in two parts, 24043 and 9490, that added together give a palindrome (33533).

The spelling of 240439490 in words is "two hundred forty million, four hundred thirty-nine thousand, four hundred ninety".