144617990 has 48 divisors (see below), whose sum is σ = 289061136. Its totient is φ = 52050240.

The previous prime is 144617927. The next prime is 144618011. The reversal of 144617990 is 99716441.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128912 + ... + 130028.

It is an arithmetic number, because the mean of its divisors is an integer number (6022107).

Almost surely, 2^144617990 is an apocalyptic number.

144617990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144617990 is a deficient number, since it is larger than the sum of its proper divisors (144443146).

144617990 is a wasteful number, since it uses less digits than its factorization.

144617990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253 (or 1242 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 144617990 is about 12025.7220157461. The cubic root of 144617990 is about 524.8970198620.

The spelling of 144617990 in words is "one hundred forty-four million, six hundred seventeen thousand, nine hundred ninety".