154329949 has 2 divisors, whose sum is σ = 154329950. Its totient is φ = 154329948.

The previous prime is 154329911. The next prime is 154329979. The reversal of 154329949 is 949923451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142205625 + 12124324 = 11925^2 + 3482^2 .

It is a cyclic number.

It is not a de Polignac number, because 154329949 - 2²¹ = 152232797 is a prime.

It is equal to p_8673994 and since 154329949 and 8673994 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 154329899 and 154329908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154329979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77164974 + 77164975.

It is an arithmetic number, because the mean of its divisors is an integer number (77164975).

Almost surely, 2^154329949 is an apocalyptic number.

It is an amenable number.

154329949 is a deficient number, since it is larger than the sum of its proper divisors (1).

154329949 is an equidigital number, since it uses as much as digits as its factorization.

154329949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 154329949 is about 12422.9605569687. The cubic root of 154329949 is about 536.3933737476.

The spelling of 154329949 in words is "one hundred fifty-four million, three hundred twenty-nine thousand, nine hundred forty-nine".