259693402 has 4 divisors (see below), whose sum is σ = 389540106. Its totient is φ = 129846700.

The previous prime is 259693381. The next prime is 259693451. The reversal of 259693402 is 204396952.

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

It can be written as a sum of positive squares in only one way, i.e., 130439241 + 129254161 = 11421^2 + 11369^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64923349 + ... + 64923352.

Almost surely, 2^259693402 is an apocalyptic number.

259693402 is a deficient number, since it is larger than the sum of its proper divisors (129846704).

259693402 is a wasteful number, since it uses less digits than its factorization.

259693402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129846703.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 259693402 is about 16115.0054917769. The cubic root of 259693402 is about 637.9994513283. Note that the first 3 decimals are identical.

The spelling of 259693402 in words is "two hundred fifty-nine million, six hundred ninety-three thousand, four hundred two".