149986677 has 4 divisors (see below), whose sum is σ = 199982240. Its totient is φ = 99991116.

The previous prime is 149986667. The next prime is 149986679. The reversal of 149986677 is 776689941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 776689941 = 3 ⋅258896647.

It is not a de Polignac number, because 149986677 - 2¹⁶ = 149921141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149986679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24997777 + ... + 24997782.

It is an arithmetic number, because the mean of its divisors is an integer number (49995560).

Almost surely, 2^149986677 is an apocalyptic number.

It is an amenable number.

149986677 is a deficient number, since it is larger than the sum of its proper divisors (49995563).

149986677 is an equidigital number, since it uses as much as digits as its factorization.

149986677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49995562.

The product of its digits is 4572288, while the sum is 57.

The square root of 149986677 is about 12246.9047926405. The cubic root of 149986677 is about 531.3135532365.

The spelling of 149986677 in words is "one hundred forty-nine million, nine hundred eighty-six thousand, six hundred seventy-seven".