149031747 has 6 divisors (see below), whose sum is σ = 215268092. Its totient is φ = 99354492.

The previous prime is 149031739. The next prime is 149031797. The reversal of 149031747 is 747130941.

It is not a de Polignac number, because 149031747 - 2³ = 149031739 is a prime.

It is a super-2 number, since 2×149031747² = 44420923227744018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149031797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8279533 + ... + 8279550.

Almost surely, 2^149031747 is an apocalyptic number.

149031747 is a deficient number, since it is larger than the sum of its proper divisors (66236345).

149031747 is a wasteful number, since it uses less digits than its factorization.

149031747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16559089 (or 16559086 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 149031747 is about 12207.8559542616. The cubic root of 149031747 is about 530.1835687846.

The spelling of 149031747 in words is "one hundred forty-nine million, thirty-one thousand, seven hundred forty-seven".