145624939 has 2 divisors, whose sum is σ = 145624940. Its totient is φ = 145624938.

The previous prime is 145624903. The next prime is 145624951. The reversal of 145624939 is 939426541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145624939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145624895 and 145624904.

It is not a weakly prime, because it can be changed into another prime (145624139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72812469 + 72812470.

It is an arithmetic number, because the mean of its divisors is an integer number (72812470).

Almost surely, 2^145624939 is an apocalyptic number.

145624939 is a deficient number, since it is larger than the sum of its proper divisors (1).

145624939 is an equidigital number, since it uses as much as digits as its factorization.

145624939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 43.

The square root of 145624939 is about 12067.5158587010. The cubic root of 145624939 is about 526.1124577027.

The spelling of 145624939 in words is "one hundred forty-five million, six hundred twenty-four thousand, nine hundred thirty-nine".