4006402 has 4 divisors (see below), whose sum is σ = 6009606. Its totient is φ = 2003200.

The previous prime is 4006381. The next prime is 4006403. The reversal of 4006402 is 2046004.

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., 4004001 + 2401 = 2001^2 + 49^2 .

It is not an unprimeable number, because it can be changed into a prime (4006403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001599 + ... + 1001602.

Almost surely, 2^4006402 is an apocalyptic number.

4006402 is a deficient number, since it is larger than the sum of its proper divisors (2003204).

4006402 is a wasteful number, since it uses less digits than its factorization.

4006402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003203.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 4006402 is about 2001.5998601119. The cubic root of 4006402 is about 158.8247479021.

The spelling of 4006402 in words is "four million, six thousand, four hundred two".