149029919 has 2 divisors, whose sum is σ = 149029920. Its totient is φ = 149029918.

The previous prime is 149029897. The next prime is 149029943. The reversal of 149029919 is 919920941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149029919 - 2¹² = 149025823 is a prime.

It is a super-2 number, since 2×149029919² = 44419833514293122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149029919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149029999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74514959 + 74514960.

It is an arithmetic number, because the mean of its divisors is an integer number (74514960).

Almost surely, 2^149029919 is an apocalyptic number.

149029919 is a deficient number, since it is larger than the sum of its proper divisors (1).

149029919 is an equidigital number, since it uses as much as digits as its factorization.

149029919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 149029919 is about 12207.7810842102. The cubic root of 149029919 is about 530.1814010596.

The spelling of 149029919 in words is "one hundred forty-nine million, twenty-nine thousand, nine hundred nineteen".