146972539 has 8 divisors (see below), whose sum is σ = 168075008. Its totient is φ = 125896680.

The previous prime is 146972533. The next prime is 146972549. The reversal of 146972539 is 935279641.

It is a happy number.

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

It is not a de Polignac number, because 146972539 - 2⁷ = 146972411 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (146972533) 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, 7084 + ... + 18550.

It is an arithmetic number, because the mean of its divisors is an integer number (21009376).

Almost surely, 2^146972539 is an apocalyptic number.

146972539 is a deficient number, since it is larger than the sum of its proper divisors (21102469).

146972539 is a wasteful number, since it uses less digits than its factorization.

146972539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13305.

The product of its digits is 408240, while the sum is 46.

The square root of 146972539 is about 12123.2231275350. The cubic root of 146972539 is about 527.7303430125.

The spelling of 146972539 in words is "one hundred forty-six million, nine hundred seventy-two thousand, five hundred thirty-nine".