149217113 has 4 divisors (see below), whose sum is σ = 149303988. Its totient is φ = 149130240.

The previous prime is 149217091. The next prime is 149217119. The reversal of 149217113 is 311712941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311712941 = 12479 ⋅24979.

It can be written as a sum of positive squares in 2 ways, for example, as 66716224 + 82500889 = 8168^2 + 9083^2 .

It is a cyclic number.

It is not a de Polignac number, because 149217113 - 2⁶ = 149217049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149217119) 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, 40808 + ... + 44313.

It is an arithmetic number, because the mean of its divisors is an integer number (37325997).

Almost surely, 2^149217113 is an apocalyptic number.

It is an amenable number.

149217113 is a deficient number, since it is larger than the sum of its proper divisors (86875).

149217113 is an equidigital number, since it uses as much as digits as its factorization.

149217113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86874.

The product of its digits is 1512, while the sum is 29.

The square root of 149217113 is about 12215.4456734087. The cubic root of 149217113 is about 530.4032921912.

The spelling of 149217113 in words is "one hundred forty-nine million, two hundred seventeen thousand, one hundred thirteen".