146639047 has 2 divisors, whose sum is σ = 146639048. Its totient is φ = 146639046.

The previous prime is 146639041. The next prime is 146639123. The reversal of 146639047 is 740936641.

146639047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 146639047 - 2¹¹ = 146636999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146639041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73319523 + 73319524.

It is an arithmetic number, because the mean of its divisors is an integer number (73319524).

Almost surely, 2^146639047 is an apocalyptic number.

146639047 is a deficient number, since it is larger than the sum of its proper divisors (1).

146639047 is an equidigital number, since it uses as much as digits as its factorization.

146639047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 146639047 is about 12109.4610532426. The cubic root of 146639047 is about 527.3308871429.

The spelling of 146639047 in words is "one hundred forty-six million, six hundred thirty-nine thousand, forty-seven".