145689379 has 8 divisors (see below), whose sum is σ = 159206400. Its totient is φ = 132217800.

The previous prime is 145689377. The next prime is 145689389. The reversal of 145689379 is 973986541.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145689379 - 2¹ = 145689377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145689377) by changing a digit.

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, 4467 + ... + 17644.

It is an arithmetic number, because the mean of its divisors is an integer number (19900800).

Almost surely, 2^145689379 is an apocalyptic number.

145689379 is a deficient number, since it is larger than the sum of its proper divisors (13517021).

145689379 is a wasteful number, since it uses less digits than its factorization.

145689379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22721.

The product of its digits is 1632960, while the sum is 52.

The square root of 145689379 is about 12070.1855412417. The cubic root of 145689379 is about 526.1900490079.

The spelling of 145689379 in words is "one hundred forty-five million, six hundred eighty-nine thousand, three hundred seventy-nine".