149477109 has 4 divisors (see below), whose sum is σ = 199302816. Its totient is φ = 99651404.

The previous prime is 149477101. The next prime is 149477131. The reversal of 149477109 is 901774941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149477109 - 2³ = 149477101 is a prime.

It is a super-2 number, since 2×149477109² = 44686812229995762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149477101) 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, 24912849 + ... + 24912854.

It is an arithmetic number, because the mean of its divisors is an integer number (49825704).

Almost surely, 2^149477109 is an apocalyptic number.

It is an amenable number.

149477109 is a deficient number, since it is larger than the sum of its proper divisors (49825707).

149477109 is an equidigital number, since it uses as much as digits as its factorization.

149477109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49825706.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 149477109 is about 12226.0831422005. The cubic root of 149477109 is about 530.7111717971.

The spelling of 149477109 in words is "one hundred forty-nine million, four hundred seventy-seven thousand, one hundred nine".