290450197 has 4 divisors (see below), whose sum is σ = 290493216. Its totient is φ = 290407180.

The previous prime is 290450179. The next prime is 290450213. The reversal of 290450197 is 791054092.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-290450197 is a prime.

It is a super-2 number, since 2×290450197² = 168722633874677618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290450497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8929 + ... + 25702.

It is an arithmetic number, because the mean of its divisors is an integer number (72623304).

Almost surely, 2^290450197 is an apocalyptic number.

It is an amenable number.

290450197 is a deficient number, since it is larger than the sum of its proper divisors (43019).

290450197 is an equidigital number, since it uses as much as digits as its factorization.

290450197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43018.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 290450197 is about 17042.5994789527. The cubic root of 290450197 is about 662.2529351435.

The spelling of 290450197 in words is "two hundred ninety million, four hundred fifty thousand, one hundred ninety-seven".