146227809 has 24 divisors (see below), whose sum is σ = 244251840. Its totient is φ = 77130144.

The previous prime is 146227777. The next prime is 146227841. The reversal of 146227809 is 908722641.

It is an interprime number because it is at equal distance from previous prime (146227777) and next prime (146227841).

It is not a de Polignac number, because 146227809 - 2⁵ = 146227777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146227849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36349 + ... + 40170.

It is an arithmetic number, because the mean of its divisors is an integer number (10177160).

Almost surely, 2^146227809 is an apocalyptic number.

It is an amenable number.

146227809 is a deficient number, since it is larger than the sum of its proper divisors (98024031).

146227809 is a wasteful number, since it uses less digits than its factorization.

146227809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76549 (or 76542 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 146227809 is about 12092.4691027102. The cubic root of 146227809 is about 526.8374725505.

The spelling of 146227809 in words is "one hundred forty-six million, two hundred twenty-seven thousand, eight hundred nine".