155598439 has 2 divisors, whose sum is σ = 155598440. Its totient is φ = 155598438.

The previous prime is 155598419. The next prime is 155598463. The reversal of 155598439 is 934895551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155598439 - 2¹¹ = 155596391 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 155598392 and 155598401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155598419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77799219 + 77799220.

It is an arithmetic number, because the mean of its divisors is an integer number (77799220).

Almost surely, 2^155598439 is an apocalyptic number.

155598439 is a deficient number, since it is larger than the sum of its proper divisors (1).

155598439 is an equidigital number, since it uses as much as digits as its factorization.

155598439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972000, while the sum is 49.

The square root of 155598439 is about 12473.9103331714. The cubic root of 155598439 is about 537.8589651182.

The spelling of 155598439 in words is "one hundred fifty-five million, five hundred ninety-eight thousand, four hundred thirty-nine".