346402987 has 4 divisors (see below), whose sum is σ = 395889136. Its totient is φ = 296916840.

The previous prime is 346402967. The next prime is 346402997. The reversal of 346402987 is 789204643.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-346402987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346402937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24743064 + ... + 24743077.

It is an arithmetic number, because the mean of its divisors is an integer number (98972284).

Almost surely, 2^346402987 is an apocalyptic number.

346402987 is a deficient number, since it is larger than the sum of its proper divisors (49486149).

346402987 is an equidigital number, since it uses as much as digits as its factorization.

346402987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49486148.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 346402987 is about 18611.9044431246. The cubic root of 346402987 is about 702.3073433105.

The spelling of 346402987 in words is "three hundred forty-six million, four hundred two thousand, nine hundred eighty-seven".