149609983 has 2 divisors, whose sum is σ = 149609984. Its totient is φ = 149609982.

The previous prime is 149609969. The next prime is 149610001. The reversal of 149609983 is 389906941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149609983 - 2¹⁷ = 149478911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149609953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74804991 + 74804992.

It is an arithmetic number, because the mean of its divisors is an integer number (74804992).

Almost surely, 2^149609983 is an apocalyptic number.

149609983 is a deficient number, since it is larger than the sum of its proper divisors (1).

149609983 is an equidigital number, since it uses as much as digits as its factorization.

149609983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 149609983 is about 12231.5159730918. The cubic root of 149609983 is about 530.8683794392.

The spelling of 149609983 in words is "one hundred forty-nine million, six hundred nine thousand, nine hundred eighty-three".