144779393 has 8 divisors (see below), whose sum is σ = 163036416. Its totient is φ = 127371600.

The previous prime is 144779381. The next prime is 144779399. The reversal of 144779393 is 393977441.

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

It is a cyclic number.

It is not a de Polignac number, because 144779393 - 2⁴ = 144779377 is a prime.

It is a super-2 number, since 2×144779393² = 41922145274896898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144779399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211946 + ... + 212627.

It is an arithmetic number, because the mean of its divisors is an integer number (20379552).

Almost surely, 2^144779393 is an apocalyptic number.

It is an amenable number.

144779393 is a deficient number, since it is larger than the sum of its proper divisors (18257023).

144779393 is a wasteful number, since it uses less digits than its factorization.

144779393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424615.

The product of its digits is 571536, while the sum is 47.

The square root of 144779393 is about 12032.4308849043. The cubic root of 144779393 is about 525.0922202322.

The spelling of 144779393 in words is "one hundred forty-four million, seven hundred seventy-nine thousand, three hundred ninety-three".