145441799 has 4 divisors (see below), whose sum is σ = 145501536. Its totient is φ = 145382064.

The previous prime is 145441787. The next prime is 145441831. The reversal of 145441799 is 997144541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997144541 = 1889 ⋅527869.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145441799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145441759) 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 3 ways as a sum of consecutive naturals, for example, 26054 + ... + 31139.

It is an arithmetic number, because the mean of its divisors is an integer number (36375384).

Almost surely, 2^145441799 is an apocalyptic number.

145441799 is a deficient number, since it is larger than the sum of its proper divisors (59737).

145441799 is an equidigital number, since it uses as much as digits as its factorization.

145441799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59736.

The product of its digits is 181440, while the sum is 44.

The square root of 145441799 is about 12059.9253314438. The cubic root of 145441799 is about 525.8918163397.

The spelling of 145441799 in words is "one hundred forty-five million, four hundred forty-one thousand, seven hundred ninety-nine".