239144690 has 32 divisors (see below), whose sum is σ = 443396160. Its totient is φ = 92798784.

The previous prime is 239144651. The next prime is 239144693. The reversal of 239144690 is 96441932.

It is a super-2 number, since 2×239144690² = 114380365510392200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (239144693) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 163181 + ... + 164639.

It is an arithmetic number, because the mean of its divisors is an integer number (13856130).

Almost surely, 2^239144690 is an apocalyptic number.

239144690 is a deficient number, since it is larger than the sum of its proper divisors (204251470).

239144690 is a wasteful number, since it uses less digits than its factorization.

239144690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 239144690 is about 15464.3037347305. The cubic root of 239144690 is about 620.7073871907.

The spelling of 239144690 in words is "two hundred thirty-nine million, one hundred forty-four thousand, six hundred ninety".