149947 has 8 divisors (see below), whose sum is σ = 177152. Its totient is φ = 124200.

The previous prime is 149939. The next prime is 149953. The reversal of 149947 is 749941.

149947 is nontrivially palindromic in base 13.

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

It is a cyclic number.

It is not a de Polignac number, because 149947 - 2³ = 149939 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (143947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129 + ... + 562.

It is an arithmetic number, because the mean of its divisors is an integer number (22144).

2¹⁴⁹⁹⁴⁷ is an apocalyptic number.

149947 is a deficient number, since it is larger than the sum of its proper divisors (27205).

149947 is an equidigital number, since it uses as much as digits as its factorization.

149947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729.

The product of its digits is 9072, while the sum is 34.

The square root of 149947 is about 387.2299058699. The cubic root of 149947 is about 53.1266698437.

The spelling of 149947 in words is "one hundred forty-nine thousand, nine hundred forty-seven".