290669145 has 32 divisors (see below), whose sum is σ = 530312832. Its totient is φ = 134679552.

The previous prime is 290669143. The next prime is 290669153. The reversal of 290669145 is 541966092.

It is a happy number.

It is not a de Polignac number, because 290669145 - 2¹ = 290669143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 290669097 and 290669106.

It is not an unprimeable number, because it can be changed into a prime (290669143) 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, 40527 + ... + 47156.

It is an arithmetic number, because the mean of its divisors is an integer number (16572276).

Almost surely, 2^290669145 is an apocalyptic number.

It is an amenable number.

290669145 is a deficient number, since it is larger than the sum of its proper divisors (239643687).

290669145 is a wasteful number, since it uses less digits than its factorization.

290669145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87721.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 290669145 is about 17049.0218194476. The cubic root of 290669145 is about 662.4193004824.

The spelling of 290669145 in words is "two hundred ninety million, six hundred sixty-nine thousand, one hundred forty-five".