149211447 has 16 divisors (see below), whose sum is σ = 248040192. Its totient is φ = 77512320.

The previous prime is 149211407. The next prime is 149211449. The reversal of 149211447 is 744112941.

149211447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149211447 - 2⁸ = 149211191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149211449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322738 + ... + 323199.

It is an arithmetic number, because the mean of its divisors is an integer number (15502512).

Almost surely, 2^149211447 is an apocalyptic number.

149211447 is a deficient number, since it is larger than the sum of its proper divisors (98828745).

149211447 is a wasteful number, since it uses less digits than its factorization.

149211447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645958.

The product of its digits is 8064, while the sum is 33.

The square root of 149211447 is about 12215.2137517114. The cubic root of 149211447 is about 530.3965787005.

The spelling of 149211447 in words is "one hundred forty-nine million, two hundred eleven thousand, four hundred forty-seven".