149880977 has 2 divisors, whose sum is σ = 149880978. Its totient is φ = 149880976.

The previous prime is 149880967. The next prime is 149881007. The reversal of 149880977 is 779088941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131767441 + 18113536 = 11479^2 + 4256^2 .

It is an emirp because it is prime and its reverse (779088941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149880977 is a prime.

It is not a weakly prime, because it can be changed into another prime (149880917) 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, 74940488 + 74940489.

It is an arithmetic number, because the mean of its divisors is an integer number (74940489).

Almost surely, 2^149880977 is an apocalyptic number.

It is an amenable number.

149880977 is a deficient number, since it is larger than the sum of its proper divisors (1).

149880977 is an equidigital number, since it uses as much as digits as its factorization.

149880977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 149880977 is about 12242.5886559992. The cubic root of 149880977 is about 531.1887131699.

The spelling of 149880977 in words is "one hundred forty-nine million, eight hundred eighty thousand, nine hundred seventy-seven".