144769887 has 6 divisors (see below), whose sum is σ = 209112072. Its totient is φ = 96513252.

The previous prime is 144769861. The next prime is 144769901. The reversal of 144769887 is 788967441.

It is a happy number.

144769887 is a `hidden beast` number, since 1 + 4 + 476 + 98 + 87 = 666.

It is not a de Polignac number, because 144769887 - 2¹⁰ = 144768863 is a prime.

It is a super-3 number, since 3×144769887³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144769187) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8042763 + ... + 8042780.

It is an arithmetic number, because the mean of its divisors is an integer number (34852012).

Almost surely, 2^144769887 is an apocalyptic number.

144769887 is a deficient number, since it is larger than the sum of its proper divisors (64342185).

144769887 is a wasteful number, since it uses less digits than its factorization.

144769887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16085549 (or 16085546 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 144769887 is about 12032.0358626460. The cubic root of 144769887 is about 525.0807277222.

The spelling of 144769887 in words is "one hundred forty-four million, seven hundred sixty-nine thousand, eight hundred eighty-seven".