349402870 has 16 divisors (see below), whose sum is σ = 665921088. Its totient is φ = 131539840.

The previous prime is 349402849. The next prime is 349402873. The reversal of 349402870 is 78204943.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349402873) 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, 1027486 + ... + 1027825.

It is an arithmetic number, because the mean of its divisors is an integer number (41620068).

Almost surely, 2^349402870 is an apocalyptic number.

349402870 is a deficient number, since it is larger than the sum of its proper divisors (316518218).

349402870 is a wasteful number, since it uses less digits than its factorization.

349402870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055335.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 349402870 is about 18692.3211506758. The cubic root of 349402870 is about 704.3288685475.

The spelling of 349402870 in words is "three hundred forty-nine million, four hundred two thousand, eight hundred seventy".