145479229 has 4 divisors (see below), whose sum is σ = 166261984. Its totient is φ = 124696476.

The previous prime is 145479221. The next prime is 145479247. The reversal of 145479229 is 922974541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 922974541 = 599 ⋅1540859.

It is a cyclic number.

It is not a de Polignac number, because 145479229 - 2³ = 145479221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145479221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10391367 + ... + 10391380.

It is an arithmetic number, because the mean of its divisors is an integer number (41565496).

Almost surely, 2^145479229 is an apocalyptic number.

It is an amenable number.

145479229 is a deficient number, since it is larger than the sum of its proper divisors (20782755).

145479229 is an equidigital number, since it uses as much as digits as its factorization.

145479229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20782754.

The product of its digits is 181440, while the sum is 43.

The square root of 145479229 is about 12061.4770654344. The cubic root of 145479229 is about 525.9369258898.

The spelling of 145479229 in words is "one hundred forty-five million, four hundred seventy-nine thousand, two hundred twenty-nine".