149085899 has 4 divisors (see below), whose sum is σ = 149909760. Its totient is φ = 148262040.

The previous prime is 149085889. The next prime is 149085901. The reversal of 149085899 is 998580941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998580941 = 47 ⋅21246403.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149085899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149085899.

It is not an unprimeable number, because it can be changed into a prime (149085889) 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, 411659 + ... + 412020.

It is an arithmetic number, because the mean of its divisors is an integer number (37477440).

Almost surely, 2^149085899 is an apocalyptic number.

149085899 is a deficient number, since it is larger than the sum of its proper divisors (823861).

149085899 is an equidigital number, since it uses as much as digits as its factorization.

149085899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823860.

The product of its (nonzero) digits is 933120, while the sum is 53.

The square root of 149085899 is about 12210.0736689014. The cubic root of 149085899 is about 530.2477766340.

The spelling of 149085899 in words is "one hundred forty-nine million, eighty-five thousand, eight hundred ninety-nine".