145832399 has 4 divisors (see below), whose sum is σ = 148935264. Its totient is φ = 142729536.

The previous prime is 145832383. The next prime is 145832413. The reversal of 145832399 is 993238541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145832399 - 2⁴ = 145832383 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 (145832359) 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, 1551362 + ... + 1551455.

It is an arithmetic number, because the mean of its divisors is an integer number (37233816).

Almost surely, 2^145832399 is an apocalyptic number.

145832399 is a deficient number, since it is larger than the sum of its proper divisors (3102865).

145832399 is an equidigital number, since it uses as much as digits as its factorization.

145832399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102864.

The product of its digits is 233280, while the sum is 44.

The square root of 145832399 is about 12076.1086033540. The cubic root of 145832399 is about 526.3621756908.

The spelling of 145832399 in words is "one hundred forty-five million, eight hundred thirty-two thousand, three hundred ninety-nine".