144434390 has 32 divisors (see below), whose sum is σ = 280355040. Its totient is φ = 53395200.

The previous prime is 144434387. The next prime is 144434429. The reversal of 144434390 is 93434441.

It is a super-2 number, since 2×144434390² = 41722586029344200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1481 + ... + 17060.

It is an arithmetic number, because the mean of its divisors is an integer number (8761095).

Almost surely, 2^144434390 is an apocalyptic number.

144434390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144434390 is a deficient number, since it is larger than the sum of its proper divisors (135920650).

144434390 is a wasteful number, since it uses less digits than its factorization.

144434390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18608.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 144434390 is about 12018.0859540944. The cubic root of 144434390 is about 524.6747978449.

The spelling of 144434390 in words is "one hundred forty-four million, four hundred thirty-four thousand, three hundred ninety".