149947906 has 8 divisors (see below), whose sum is σ = 230407884. Its totient is φ = 73145280.

The previous prime is 149947901. The next prime is 149947957. The reversal of 149947906 is 609749941.

It can be written as a sum of positive squares in 2 ways, for example, as 148718025 + 1229881 = 12195^2 + 1109^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 149947906.

It is not an unprimeable number, because it can be changed into a prime (149947901) 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, 914235 + ... + 914398.

Almost surely, 2^149947906 is an apocalyptic number.

149947906 is a deficient number, since it is larger than the sum of its proper divisors (80459978).

149947906 is a wasteful number, since it uses less digits than its factorization.

149947906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828676.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 149947906 is about 12245.3218005898. The cubic root of 149947906 is about 531.2677684299.

The spelling of 149947906 in words is "one hundred forty-nine million, nine hundred forty-seven thousand, nine hundred six".