149594647 has 4 divisors (see below), whose sum is σ = 149732856. Its totient is φ = 149456440.

The previous prime is 149594639. The next prime is 149594651. The reversal of 149594647 is 746495941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746495941 = 83 ⋅8993927.

It is a cyclic number.

It is not a de Polignac number, because 149594647 - 2³ = 149594639 is a prime.

It is a super-2 number, since 2×149594647² = 44757116822109218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149594647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149594947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67468 + ... + 69649.

It is an arithmetic number, because the mean of its divisors is an integer number (37433214).

Almost surely, 2^149594647 is an apocalyptic number.

149594647 is a deficient number, since it is larger than the sum of its proper divisors (138209).

149594647 is a wasteful number, since it uses less digits than its factorization.

149594647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138208.

The product of its digits is 1088640, while the sum is 49.

The square root of 149594647 is about 12230.8890519046. The cubic root of 149594647 is about 530.8502396612.

The spelling of 149594647 in words is "one hundred forty-nine million, five hundred ninety-four thousand, six hundred forty-seven".