149649867 has 12 divisors (see below), whose sum is σ = 222003600. Its totient is φ = 97069968.

The previous prime is 149649839. The next prime is 149649881. The reversal of 149649867 is 768946941.

149649867 is a `hidden beast` number, since 1 + 4 + 96 + 498 + 67 = 666.

It is not a de Polignac number, because 149649867 - 2¹⁰ = 149648843 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (149649817) 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 11 ways as a sum of consecutive naturals, for example, 224367 + ... + 225032.

It is an arithmetic number, because the mean of its divisors is an integer number (18500300).

Almost surely, 2^149649867 is an apocalyptic number.

149649867 is a deficient number, since it is larger than the sum of its proper divisors (72353733).

149649867 is a wasteful number, since it uses less digits than its factorization.

149649867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449442 (or 449439 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 149649867 is about 12233.1462428927. The cubic root of 149649867 is about 530.9155493602.

The spelling of 149649867 in words is "one hundred forty-nine million, six hundred forty-nine thousand, eight hundred sixty-seven".