146821899 has 16 divisors (see below), whose sum is σ = 223914240. Its totient is φ = 83828640.

The previous prime is 146821889. The next prime is 146821963. The reversal of 146821899 is 998128641.

It is not a de Polignac number, because 146821899 - 2⁹ = 146821387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146821849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33844 + ... + 37934.

It is an arithmetic number, because the mean of its divisors is an integer number (13994640).

Almost surely, 2^146821899 is an apocalyptic number.

146821899 is a deficient number, since it is larger than the sum of its proper divisors (77092341).

146821899 is a wasteful number, since it uses less digits than its factorization.

146821899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5810.

The product of its digits is 248832, while the sum is 48.

The square root of 146821899 is about 12117.0086655082. The cubic root of 146821899 is about 527.5499817123.

The spelling of 146821899 in words is "one hundred forty-six million, eight hundred twenty-one thousand, eight hundred ninety-nine".