146904409 has 8 divisors (see below), whose sum is σ = 157172480. Its totient is φ = 136890000.

The previous prime is 146904391. The next prime is 146904413. The reversal of 146904409 is 904409641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 146904409 - 2¹¹ = 146902361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146904419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62217 + ... + 64534.

It is an arithmetic number, because the mean of its divisors is an integer number (19646560).

Almost surely, 2^146904409 is an apocalyptic number.

146904409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

146904409 is a deficient number, since it is larger than the sum of its proper divisors (10268071).

146904409 is a wasteful number, since it uses less digits than its factorization.

146904409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126831.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 146904409 is about 12120.4129055078. The cubic root of 146904409 is about 527.6487862230.

The spelling of 146904409 in words is "one hundred forty-six million, nine hundred four thousand, four hundred nine".