145382399 has 2 divisors, whose sum is σ = 145382400. Its totient is φ = 145382398.

The previous prime is 145382387. The next prime is 145382401. The reversal of 145382399 is 993283541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145382399 - 2⁴ = 145382383 is a prime.

It is a super-2 number, since 2×145382399² = 42272083877990402, which contains 22 as substring.

Together with 145382401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145382309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72691199 + 72691200.

It is an arithmetic number, because the mean of its divisors is an integer number (72691200).

Almost surely, 2^145382399 is an apocalyptic number.

145382399 is a deficient number, since it is larger than the sum of its proper divisors (1).

145382399 is an equidigital number, since it uses as much as digits as its factorization.

145382399 is an evil number, because the sum of its binary digits is even.

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

The square root of 145382399 is about 12057.4623781292. The cubic root of 145382399 is about 525.8202132937.

The spelling of 145382399 in words is "one hundred forty-five million, three hundred eighty-two thousand, three hundred ninety-nine".