149788369 has 4 divisors (see below), whose sum is σ = 149826996. Its totient is φ = 149749744.

The previous prime is 149788363. The next prime is 149788399. The reversal of 149788369 is 963887941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 963887941 = 251 ⋅3840191.

It can be written as a sum of positive squares in 2 ways, for example, as 55950400 + 93837969 = 7480^2 + 9687^2 .

It is a cyclic number.

It is not a de Polignac number, because 149788369 - 2⁹ = 149787857 is a prime.

It is a super-2 number, since 2×149788369² = 44873110975360322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149788363) 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, 12754 + ... + 21499.

It is an arithmetic number, because the mean of its divisors is an integer number (37456749).

Almost surely, 2^149788369 is an apocalyptic number.

It is an amenable number.

149788369 is a deficient number, since it is larger than the sum of its proper divisors (38627).

149788369 is an equidigital number, since it uses as much as digits as its factorization.

149788369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38626.

The product of its digits is 2612736, while the sum is 55.

The square root of 149788369 is about 12238.8058649527. The cubic root of 149788369 is about 531.0792875434.

The spelling of 149788369 in words is "one hundred forty-nine million, seven hundred eighty-eight thousand, three hundred sixty-nine".