149617069 has 4 divisors (see below), whose sum is σ = 170990944. Its totient is φ = 128243196.

The previous prime is 149617043. The next prime is 149617103. The reversal of 149617069 is 960716941.

It is a happy number.

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: 960716941 = 107 ⋅8978663.

It is a cyclic number.

It is not a de Polignac number, because 149617069 - 2⁵ = 149617037 is a prime.

It is a super-2 number, since 2×149617069² = 44770534672301522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149617019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10686927 + ... + 10686940.

It is an arithmetic number, because the mean of its divisors is an integer number (42747736).

Almost surely, 2^149617069 is an apocalyptic number.

It is an amenable number.

149617069 is a deficient number, since it is larger than the sum of its proper divisors (21373875).

149617069 is an equidigital number, since it uses as much as digits as its factorization.

149617069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21373874.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 149617069 is about 12231.8056312222. The cubic root of 149617069 is about 530.8767605064.

The spelling of 149617069 in words is "one hundred forty-nine million, six hundred seventeen thousand, sixty-nine".