144721699 has 8 divisors (see below), whose sum is σ = 146895840. Its totient is φ = 142563456.

The previous prime is 144721691. The next prime is 144721711. The reversal of 144721699 is 996127441.

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 144721699 - 2³ = 144721691 is a prime.

It is a super-2 number, since 2×144721699² = 41888740322893202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144721691) 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, 15037 + ... + 22705.

It is an arithmetic number, because the mean of its divisors is an integer number (18361980).

Almost surely, 2^144721699 is an apocalyptic number.

144721699 is a deficient number, since it is larger than the sum of its proper divisors (2174141).

144721699 is a wasteful number, since it uses less digits than its factorization.

144721699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7949.

The product of its digits is 108864, while the sum is 43.

The square root of 144721699 is about 12030.0332085992. The cubic root of 144721699 is about 525.0224619263.

The spelling of 144721699 in words is "one hundred forty-four million, seven hundred twenty-one thousand, six hundred ninety-nine".