348406997 has 8 divisors (see below), whose sum is σ = 350512344. Its totient is φ = 346307328.

The previous prime is 348406973. The next prime is 348407023. The reversal of 348406997 is 799604843.

It can be written as a sum of positive squares in 4 ways, for example, as 40018276 + 308388721 = 6326^2 + 17561^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-348406997 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 (348406907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197873 + ... + 199625.

It is an arithmetic number, because the mean of its divisors is an integer number (43814043).

Almost surely, 2^348406997 is an apocalyptic number.

It is an amenable number.

348406997 is a deficient number, since it is larger than the sum of its proper divisors (2105347).

348406997 is a wasteful number, since it uses less digits than its factorization.

348406997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 348406997 is about 18665.6635831679. The cubic root of 348406997 is about 703.6590690869.

The spelling of 348406997 in words is "three hundred forty-eight million, four hundred six thousand, nine hundred ninety-seven".