290120938 has 4 divisors (see below), whose sum is σ = 435181410. Its totient is φ = 145060468.

The previous prime is 290120933. The next prime is 290120951. The reversal of 290120938 is 839021092.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 200307409 + 89813529 = 14153^2 + 9477^2 .

It is not an unprimeable number, because it can be changed into a prime (290120933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72530233 + ... + 72530236.

Almost surely, 2^290120938 is an apocalyptic number.

290120938 is a deficient number, since it is larger than the sum of its proper divisors (145060472).

290120938 is a wasteful number, since it uses less digits than its factorization.

290120938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145060471.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 290120938 is about 17032.9368577471. The cubic root of 290120938 is about 662.0025936743.

The spelling of 290120938 in words is "two hundred ninety million, one hundred twenty thousand, nine hundred thirty-eight".