149933897 has 8 divisors (see below), whose sum is σ = 160929576. Its totient is φ = 139180032.

The previous prime is 149933881. The next prime is 149933923. The reversal of 149933897 is 798339941.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 63425296 + 86508601 = 7964^2 + 9301^2 .

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 149933897 - 2⁴ = 149933881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149933867) 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 7 ways as a sum of consecutive naturals, for example, 59168 + ... + 61649.

It is an arithmetic number, because the mean of its divisors is an integer number (20116197).

Almost surely, 2^149933897 is an apocalyptic number.

149933897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

149933897 is a deficient number, since it is larger than the sum of its proper divisors (10995679).

149933897 is a wasteful number, since it uses less digits than its factorization.

149933897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120907.

The product of its digits is 1469664, while the sum is 53.

The square root of 149933897 is about 12244.7497728618. The cubic root of 149933897 is about 531.2512232129.

The spelling of 149933897 in words is "one hundred forty-nine million, nine hundred thirty-three thousand, eight hundred ninety-seven".