149183947 has 4 divisors (see below), whose sum is σ = 162746136. Its totient is φ = 135621760.

The previous prime is 149183941. The next prime is 149183981. The reversal of 149183947 is 749381941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149183947 - 2¹¹ = 149181899 is a prime.

It is a super-4 number, since 4×149183947⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149183897 and 149183906.

It is not an unprimeable number, because it can be changed into a prime (149183941) 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, 6781078 + ... + 6781099.

It is an arithmetic number, because the mean of its divisors is an integer number (40686534).

Almost surely, 2^149183947 is an apocalyptic number.

149183947 is a deficient number, since it is larger than the sum of its proper divisors (13562189).

149183947 is a wasteful number, since it uses less digits than its factorization.

149183947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13562188.

The product of its digits is 217728, while the sum is 46.

The square root of 149183947 is about 12214.0880543739. The cubic root of 149183947 is about 530.3639922773.

The spelling of 149183947 in words is "one hundred forty-nine million, one hundred eighty-three thousand, nine hundred forty-seven".