146991349 has 2 divisors, whose sum is σ = 146991350. Its totient is φ = 146991348.

The previous prime is 146991347. The next prime is 146991389. The reversal of 146991349 is 943199641.

146991349 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 can be written as a sum of positive squares in only one way, i.e., 145684900 + 1306449 = 12070^2 + 1143^2 .

It is a cyclic number.

It is not a de Polignac number, because 146991349 - 2¹ = 146991347 is a prime.

Together with 146991347, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 146991299 and 146991308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146991347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73495674 + 73495675.

It is an arithmetic number, because the mean of its divisors is an integer number (73495675).

Almost surely, 2^146991349 is an apocalyptic number.

It is an amenable number.

146991349 is a deficient number, since it is larger than the sum of its proper divisors (1).

146991349 is an equidigital number, since it uses as much as digits as its factorization.

146991349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 46.

The square root of 146991349 is about 12123.9988865061. The cubic root of 146991349 is about 527.7528555725.

The spelling of 146991349 in words is "one hundred forty-six million, nine hundred ninety-one thousand, three hundred forty-nine".