144647434 has 4 divisors (see below), whose sum is σ = 216971154. Its totient is φ = 72323716.

The previous prime is 144647429. The next prime is 144647443. The reversal of 144647434 is 434746441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 115455025 + 29192409 = 10745^2 + 5403^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144647393 and 144647402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36161857 + ... + 36161860.

Almost surely, 2^144647434 is an apocalyptic number.

144647434 is a deficient number, since it is larger than the sum of its proper divisors (72323720).

144647434 is an equidigital number, since it uses as much as digits as its factorization.

144647434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72323719.

The product of its digits is 129024, while the sum is 37.

The square root of 144647434 is about 12026.9461626799. The cubic root of 144647434 is about 524.9326401862.

The spelling of 144647434 in words is "one hundred forty-four million, six hundred forty-seven thousand, four hundred thirty-four".