149826979 has 2 divisors, whose sum is σ = 149826980. Its totient is φ = 149826978.

The previous prime is 149826977. The next prime is 149827003. The reversal of 149826979 is 979628941.

It is a weak prime.

It is an emirp because it is prime and its reverse (979628941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149826979 - 2¹ = 149826977 is a prime.

Together with 149826977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (149826973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74913489 + 74913490.

It is an arithmetic number, because the mean of its divisors is an integer number (74913490).

Almost surely, 2^149826979 is an apocalyptic number.

149826979 is a deficient number, since it is larger than the sum of its proper divisors (1).

149826979 is an equidigital number, since it uses as much as digits as its factorization.

149826979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 55.

The square root of 149826979 is about 12240.3831230889. The cubic root of 149826979 is about 531.1249146057.

The spelling of 149826979 in words is "one hundred forty-nine million, eight hundred twenty-six thousand, nine hundred seventy-nine".