354744991 has 4 divisors (see below), whose sum is σ = 373415800. Its totient is φ = 336074184.

The previous prime is 354744983. The next prime is 354745009. The reversal of 354744991 is 199447453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199447453 = 607 ⋅328579.

It is a cyclic number.

It is not a de Polignac number, because 354744991 - 2³ = 354744983 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 (354745991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9335376 + ... + 9335413.

It is an arithmetic number, because the mean of its divisors is an integer number (93353950).

Almost surely, 2^354744991 is an apocalyptic number.

354744991 is a deficient number, since it is larger than the sum of its proper divisors (18670809).

354744991 is a wasteful number, since it uses less digits than its factorization.

354744991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18670808.

The product of its digits is 544320, while the sum is 46.

The square root of 354744991 is about 18834.6752294803. The cubic root of 354744991 is about 707.9002906547.

The spelling of 354744991 in words is "three hundred fifty-four million, seven hundred forty-four thousand, nine hundred ninety-one".