149597979 has 8 divisors (see below), whose sum is σ = 206342160. Its totient is φ = 96292896.

The previous prime is 149597953. The next prime is 149597983. The reversal of 149597979 is 979795941.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149597979 - 2¹² = 149593883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149597779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859672 + ... + 859845.

It is an arithmetic number, because the mean of its divisors is an integer number (25792770).

Almost surely, 2^149597979 is an apocalyptic number.

149597979 is a deficient number, since it is larger than the sum of its proper divisors (56744181).

149597979 is a wasteful number, since it uses less digits than its factorization.

149597979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719549.

The product of its digits is 6429780, while the sum is 60.

The square root of 149597979 is about 12231.0252636482. The cubic root of 149597979 is about 530.8541809338.

The spelling of 149597979 in words is "one hundred forty-nine million, five hundred ninety-seven thousand, nine hundred seventy-nine".