329978090 has 16 divisors (see below), whose sum is σ = 639650088. Its totient is φ = 121838016.

The previous prime is 329978069. The next prime is 329978101. The reversal of 329978090 is 90879923.

It can be written as a sum of positive squares in 4 ways, for example, as 123854641 + 206123449 = 11129^2 + 14357^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1269017 + ... + 1269276.

Almost surely, 2^329978090 is an apocalyptic number.

329978090 is a deficient number, since it is larger than the sum of its proper divisors (309671998).

329978090 is a wasteful number, since it uses less digits than its factorization.

329978090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538313.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 329978090 is about 18165.2990616725. The cubic root of 329978090 is about 691.0270289886.

The spelling of 329978090 in words is "three hundred twenty-nine million, nine hundred seventy-eight thousand, ninety".