353973987 has 12 divisors (see below), whose sum is σ = 511864080. Its totient is φ = 235720368.

The previous prime is 353973959. The next prime is 353973989. The reversal of 353973987 is 789379353.

It is a happy number.

It is not a de Polignac number, because 353973987 - 2⁶ = 353973923 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (353973989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13128 + ... + 29669.

It is an arithmetic number, because the mean of its divisors is an integer number (42655340).

Almost surely, 2^353973987 is an apocalyptic number.

353973987 is a deficient number, since it is larger than the sum of its proper divisors (157890093).

353973987 is a wasteful number, since it uses less digits than its factorization.

353973987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43722 (or 43719 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 54.

The square root of 353973987 is about 18814.1964218512. The cubic root of 353973987 is about 707.3870676750.

The spelling of 353973987 in words is "three hundred fifty-three million, nine hundred seventy-three thousand, nine hundred eighty-seven".