290387361 has 8 divisors (see below), whose sum is σ = 422381664. Its totient is φ = 175992320.

The previous prime is 290387347. The next prime is 290387381. The reversal of 290387361 is 163783092.

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

It is a cyclic number.

It is not a de Polignac number, because 290387361 - 2⁵ = 290387329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (290387311) 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, 4399776 + ... + 4399841.

It is an arithmetic number, because the mean of its divisors is an integer number (52797708).

Almost surely, 2^290387361 is an apocalyptic number.

It is an amenable number.

290387361 is a deficient number, since it is larger than the sum of its proper divisors (131994303).

290387361 is a wasteful number, since it uses less digits than its factorization.

290387361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8799631.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 290387361 is about 17040.7558811222. The cubic root of 290387361 is about 662.2051744292.

The spelling of 290387361 in words is "two hundred ninety million, three hundred eighty-seven thousand, three hundred sixty-one".