144993972 has 24 divisors (see below), whose sum is σ = 347464096. Its totient is φ = 47024928.

The previous prime is 144993967. The next prime is 144993983. The reversal of 144993972 is 279399441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162838 + ... + 163725.

Almost surely, 2^144993972 is an apocalyptic number.

144993972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

144993972 is an abundant number, since it is smaller than the sum of its proper divisors (202470124).

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

144993972 is a wasteful number, since it uses less digits than its factorization.

144993972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326607 (or 326605 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 144993972 is about 12041.3442771146. The cubic root of 144993972 is about 525.3515070041.

The spelling of 144993972 in words is "one hundred forty-four million, nine hundred ninety-three thousand, nine hundred seventy-two".