356490861 has 4 divisors (see below), whose sum is σ = 475321152. Its totient is φ = 237660572.

The previous prime is 356490857. The next prime is 356490889. The reversal of 356490861 is 168094653.

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 not a de Polignac number, because 356490861 - 2² = 356490857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356490821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59415141 + ... + 59415146.

It is an arithmetic number, because the mean of its divisors is an integer number (118830288).

Almost surely, 2^356490861 is an apocalyptic number.

It is an amenable number.

356490861 is a deficient number, since it is larger than the sum of its proper divisors (118830291).

356490861 is a wasteful number, since it uses less digits than its factorization.

356490861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118830290.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 356490861 is about 18880.9655738259. The cubic root of 356490861 is about 709.0596961890.

The spelling of 356490861 in words is "three hundred fifty-six million, four hundred ninety thousand, eight hundred sixty-one".