146997291 has 32 divisors (see below), whose sum is σ = 228096000. Its totient is φ = 82477440.

The previous prime is 146997289. The next prime is 146997299. The reversal of 146997291 is 192799641.

It is not a de Polignac number, because 146997291 - 2¹ = 146997289 is a prime.

It is a super-2 number, since 2×146997291² = 43216407122677362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 146997291.

It is not an unprimeable number, because it can be changed into a prime (146997299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 340846 + ... + 341276.

It is an arithmetic number, because the mean of its divisors is an integer number (7128000).

Almost surely, 2^146997291 is an apocalyptic number.

146997291 is a deficient number, since it is larger than the sum of its proper divisors (81098709).

146997291 is a wasteful number, since it uses less digits than its factorization.

146997291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699.

The product of its digits is 244944, while the sum is 48.

The square root of 146997291 is about 12124.2439351904. The cubic root of 146997291 is about 527.7599667965.

The spelling of 146997291 in words is "one hundred forty-six million, nine hundred ninety-seven thousand, two hundred ninety-one".