290120397 has 8 divisors (see below), whose sum is σ = 442088256. Its totient is φ = 165783072.

The previous prime is 290120371. The next prime is 290120401. The reversal of 290120397 is 793021092.

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

It is not a de Polignac number, because 290120397 - 2²⁰ = 289071821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290120497) 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, 6907608 + ... + 6907649.

It is an arithmetic number, because the mean of its divisors is an integer number (55261032).

Almost surely, 2^290120397 is an apocalyptic number.

It is an amenable number.

290120397 is a deficient number, since it is larger than the sum of its proper divisors (151967859).

290120397 is a wasteful number, since it uses less digits than its factorization.

290120397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13815267.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 290120397 is about 17032.9209767438. The cubic root of 290120397 is about 662.0021821866.

The spelling of 290120397 in words is "two hundred ninety million, one hundred twenty thousand, three hundred ninety-seven".