149819347 has 4 divisors (see below), whose sum is σ = 149968840. Its totient is φ = 149669856.

The previous prime is 149819333. The next prime is 149819359. The reversal of 149819347 is 743918941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149819347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149819297 and 149819306.

It is not an unprimeable number, because it can be changed into a prime (149819647) 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, 73233 + ... + 75250.

It is an arithmetic number, because the mean of its divisors is an integer number (37492210).

Almost surely, 2^149819347 is an apocalyptic number.

149819347 is a deficient number, since it is larger than the sum of its proper divisors (149493).

149819347 is a wasteful number, since it uses less digits than its factorization.

149819347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149492.

The product of its digits is 217728, while the sum is 46.

The square root of 149819347 is about 12240.0713641710. The cubic root of 149819347 is about 531.1158961717.

The spelling of 149819347 in words is "one hundred forty-nine million, eight hundred nineteen thousand, three hundred forty-seven".