144471894 has 36 divisors (see below), whose sum is σ = 336598452. Its totient is φ = 41218800.

The previous prime is 144471869. The next prime is 144471913. The reversal of 144471894 is 498174441.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 205744 + ... + 206444.

It is an arithmetic number, because the mean of its divisors is an integer number (9349957).

Almost surely, 2^144471894 is an apocalyptic number.

144471894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

144471894 is an abundant number, since it is smaller than the sum of its proper divisors (192126558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144471894 is an frugal number, since it uses more digits than its factorization.

144471894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421 (or 713 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 144471894 is about 12019.6461678371. The cubic root of 144471894 is about 524.7202064689.

The spelling of 144471894 in words is "one hundred forty-four million, four hundred seventy-one thousand, eight hundred ninety-four".