149685499 has 4 divisors (see below), whose sum is σ = 149850720. Its totient is φ = 149520280.

The previous prime is 149685469. The next prime is 149685509. The reversal of 149685499 is 994586941.

149685499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 994586941 = 11173 ⋅89017.

It is a cyclic number.

It is not a de Polignac number, because 149685499 - 2⁵ = 149685467 is a prime.

It is a super-2 number, since 2×149685499² = 44811497221758002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149685469) 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, 81244 + ... + 83065.

It is an arithmetic number, because the mean of its divisors is an integer number (37462680).

Almost surely, 2^149685499 is an apocalyptic number.

149685499 is a deficient number, since it is larger than the sum of its proper divisors (165221).

149685499 is an equidigital number, since it uses as much as digits as its factorization.

149685499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165220.

The product of its digits is 2799360, while the sum is 55.

The square root of 149685499 is about 12234.6025272585. The cubic root of 149685499 is about 530.9576834474.

The spelling of 149685499 in words is "one hundred forty-nine million, six hundred eighty-five thousand, four hundred ninety-nine".