154939933 has 2 divisors, whose sum is σ = 154939934. Its totient is φ = 154939932.

The previous prime is 154939931. The next prime is 154939949. The reversal of 154939933 is 339939451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96294969 + 58644964 = 9813^2 + 7658^2 .

It is an emirp because it is prime and its reverse (339939451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154939933 - 2¹ = 154939931 is a prime.

Together with 154939931, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154939931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77469966 + 77469967.

It is an arithmetic number, because the mean of its divisors is an integer number (77469967).

Almost surely, 2^154939933 is an apocalyptic number.

It is an amenable number.

154939933 is a deficient number, since it is larger than the sum of its proper divisors (1).

154939933 is an equidigital number, since it uses as much as digits as its factorization.

154939933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 393660, while the sum is 46.

The square root of 154939933 is about 12447.4870154582. The cubic root of 154939933 is about 537.0991370615.

The spelling of 154939933 in words is "one hundred fifty-four million, nine hundred thirty-nine thousand, nine hundred thirty-three".