149858857 has 4 divisors (see below), whose sum is σ = 151038976. Its totient is φ = 148678740.

The previous prime is 149858803. The next prime is 149858881. The reversal of 149858857 is 758858941.

149858857 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 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 149858857 - 2⁷ = 149858729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149858798 and 149858807.

It is not an unprimeable number, because it can be changed into a prime (149858887) 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, 589869 + ... + 590122.

It is an arithmetic number, because the mean of its divisors is an integer number (37759744).

Almost surely, 2^149858857 is an apocalyptic number.

It is an amenable number.

149858857 is a deficient number, since it is larger than the sum of its proper divisors (1180119).

149858857 is a wasteful number, since it uses less digits than its factorization.

149858857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180118.

The product of its digits is 3225600, while the sum is 55.

The square root of 149858857 is about 12241.6852189558. The cubic root of 149858857 is about 531.1625802729.

The spelling of 149858857 in words is "one hundred forty-nine million, eight hundred fifty-eight thousand, eight hundred fifty-seven".