8159402 has 4 divisors (see below), whose sum is σ = 12239106. Its totient is φ = 4079700.

The previous prime is 8159399. The next prime is 8159419. The reversal of 8159402 is 2049518.

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., 4879681 + 3279721 = 2209^2 + 1811^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2039849 + ... + 2039852.

Almost surely, 2^8159402 is an apocalyptic number.

8159402 is a deficient number, since it is larger than the sum of its proper divisors (4079704).

8159402 is a wasteful number, since it uses less digits than its factorization.

8159402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4079703.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 8159402 is about 2856.4666985631. The cubic root of 8159402 is about 201.3196238149.

The spelling of 8159402 in words is "eight million, one hundred fifty-nine thousand, four hundred two".