354997891 has 8 divisors (see below), whose sum is σ = 357696000. Its totient is φ = 352309320.

The previous prime is 354997883. The next prime is 354997897. The reversal of 354997891 is 198799453.

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

It is a cyclic number.

It is not a de Polignac number, because 354997891 - 2³ = 354997883 is a prime.

It is a super-2 number, since 2×354997891² = 252047005228895762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354997897) 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 7 ways as a sum of consecutive naturals, for example, 83700 + ... + 87838.

It is an arithmetic number, because the mean of its divisors is an integer number (44712000).

Almost surely, 2^354997891 is an apocalyptic number.

354997891 is a deficient number, since it is larger than the sum of its proper divisors (2698109).

354997891 is a wasteful number, since it uses less digits than its factorization.

354997891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4769.

The product of its digits is 2449440, while the sum is 55.

The square root of 354997891 is about 18841.3877142847. The cubic root of 354997891 is about 708.0684729279.

The spelling of 354997891 in words is "three hundred fifty-four million, nine hundred ninety-seven thousand, eight hundred ninety-one".