149224947 has 4 divisors (see below), whose sum is σ = 198966600. Its totient is φ = 99483296.

The previous prime is 149224937. The next prime is 149224949. The reversal of 149224947 is 749422941.

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

It is a cyclic number.

It is not a de Polignac number, because 149224947 - 2⁴ = 149224931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149224899 and 149224908.

It is not an unprimeable number, because it can be changed into a prime (149224949) 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, 24870822 + ... + 24870827.

It is an arithmetic number, because the mean of its divisors is an integer number (49741650).

Almost surely, 2^149224947 is an apocalyptic number.

149224947 is a deficient number, since it is larger than the sum of its proper divisors (49741653).

149224947 is an equidigital number, since it uses as much as digits as its factorization.

149224947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49741652.

The product of its digits is 145152, while the sum is 42.

The square root of 149224947 is about 12215.7663288064. The cubic root of 149224947 is about 530.4125742067.

The spelling of 149224947 in words is "one hundred forty-nine million, two hundred twenty-four thousand, nine hundred forty-seven".