290393442 has 12 divisors (see below), whose sum is σ = 629185830. Its totient is φ = 96797808.

The previous prime is 290393437. The next prime is 290393503. The reversal of 290393442 is 244393092.

It can be written as a sum of positive squares in only one way, i.e., 249292521 + 41100921 = 15789^2 + 6411^2 .

It is a junction number, because it is equal to n+sod(n) for n = 290393397 and 290393406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8066467 + ... + 8066502.

Almost surely, 2^290393442 is an apocalyptic number.

290393442 is an abundant number, since it is smaller than the sum of its proper divisors (338792388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

290393442 is a wasteful number, since it uses less digits than its factorization.

290393442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16132977 (or 16132974 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 290393442 is about 17040.9343053719. The cubic root of 290393442 is about 662.2097968085.

The spelling of 290393442 in words is "two hundred ninety million, three hundred ninety-three thousand, four hundred forty-two".