149647822 has 4 divisors (see below), whose sum is σ = 224471736. Its totient is φ = 74823910.

The previous prime is 149647807. The next prime is 149647829. The reversal of 149647822 is 228746941.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149647829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37411954 + ... + 37411957.

It is an arithmetic number, because the mean of its divisors is an integer number (56117934).

Almost surely, 2^149647822 is an apocalyptic number.

149647822 is a deficient number, since it is larger than the sum of its proper divisors (74823914).

149647822 is an equidigital number, since it uses as much as digits as its factorization.

149647822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74823913.

The product of its digits is 193536, while the sum is 43.

The square root of 149647822 is about 12233.0626582226. The cubic root of 149647822 is about 530.9131309880.

The spelling of 149647822 in words is "one hundred forty-nine million, six hundred forty-seven thousand, eight hundred twenty-two".