290471857429 has 4 divisors (see below), whose sum is σ = 312815846476. Its totient is φ = 268127868384.

The previous prime is 290471857387. The next prime is 290471857447. The reversal of 290471857429 is 924758174092.

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

It can be written as a sum of positive squares in 2 ways, for example, as 143775197329 + 146696660100 = 379177^2 + 383010^2 .

It is a cyclic number.

It is not a de Polignac number, because 290471857429 - 2¹⁵ = 290471824661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290471857829) 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, 11171994504 + ... + 11171994529.

It is an arithmetic number, because the mean of its divisors is an integer number (78203961619).

Almost surely, 2^290471857429 is an apocalyptic number.

It is an amenable number.

290471857429 is a deficient number, since it is larger than the sum of its proper divisors (22343989047).

290471857429 is a wasteful number, since it uses less digits than its factorization.

290471857429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22343989046.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 290471857429 in words is "two hundred ninety billion, four hundred seventy-one million, eight hundred fifty-seven thousand, four hundred twenty-nine".