354861639 has 12 divisors (see below), whose sum is σ = 559176072. Its totient is φ = 215067600.

The previous prime is 354861631. The next prime is 354861643. The reversal of 354861639 is 936168453.

354861639 is a `hidden beast` number, since 3 + 5 + 4 + 8 + 6 + 1 + 639 = 666.

It is not a de Polignac number, because 354861639 - 2³ = 354861631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 354861594 and 354861603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354861631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1792132 + ... + 1792329.

It is an arithmetic number, because the mean of its divisors is an integer number (46598006).

Almost surely, 2^354861639 is an apocalyptic number.

354861639 is a deficient number, since it is larger than the sum of its proper divisors (204314433).

354861639 is a wasteful number, since it uses less digits than its factorization.

354861639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584478 (or 3584475 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 354861639 is about 18837.7716038814. The cubic root of 354861639 is about 707.9778732432.

The spelling of 354861639 in words is "three hundred fifty-four million, eight hundred sixty-one thousand, six hundred thirty-nine".