145464439 has 2 divisors, whose sum is σ = 145464440. Its totient is φ = 145464438.

The previous prime is 145464419. The next prime is 145464457. The reversal of 145464439 is 934464541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145464439 - 2⁷ = 145464311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145464409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72732219 + 72732220.

It is an arithmetic number, because the mean of its divisors is an integer number (72732220).

Almost surely, 2^145464439 is an apocalyptic number.

145464439 is a deficient number, since it is larger than the sum of its proper divisors (1).

145464439 is an equidigital number, since it uses as much as digits as its factorization.

145464439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The square root of 145464439 is about 12060.8639408626. The cubic root of 145464439 is about 525.9191023356.

The spelling of 145464439 in words is "one hundred forty-five million, four hundred sixty-four thousand, four hundred thirty-nine".