146889407 has 8 divisors (see below), whose sum is σ = 171300000. Its totient is φ = 125904912.

The previous prime is 146889373. The next prime is 146889481. The reversal of 146889407 is 704988641.

It is not a de Polignac number, because 146889407 - 2⁸ = 146889151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146886407) 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, 213782 + ... + 214467.

It is an arithmetic number, because the mean of its divisors is an integer number (21412500).

Almost surely, 2^146889407 is an apocalyptic number.

146889407 is a deficient number, since it is larger than the sum of its proper divisors (24410593).

146889407 is an frugal number, since it uses more digits than its factorization.

146889407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428270 (or 428256 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 146889407 is about 12119.7940164014. The cubic root of 146889407 is about 527.6308243011.

The spelling of 146889407 in words is "one hundred forty-six million, eight hundred eighty-nine thousand, four hundred seven".