144994691 has 8 divisors (see below), whose sum is σ = 152799264. Its totient is φ = 137315200.

The previous prime is 144994687. The next prime is 144994711. The reversal of 144994691 is 196499441.

It is a happy number.

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 144994691 - 2² = 144994687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144994631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28886 + ... + 33531.

It is an arithmetic number, because the mean of its divisors is an integer number (19099908).

Almost surely, 2^144994691 is an apocalyptic number.

144994691 is a deficient number, since it is larger than the sum of its proper divisors (7804573).

144994691 is a wasteful number, since it uses less digits than its factorization.

144994691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62541.

The product of its digits is 279936, while the sum is 47.

The square root of 144994691 is about 12041.3741325482. The cubic root of 144994691 is about 525.3523753784.

The spelling of 144994691 in words is "one hundred forty-four million, nine hundred ninety-four thousand, six hundred ninety-one".