402006974 has 4 divisors (see below), whose sum is σ = 603010464. Its totient is φ = 201003486.

The previous prime is 402006947. The next prime is 402006989. The reversal of 402006974 is 479600204.

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

It is a self number, because there is not a number n which added to its sum of digits gives 402006974.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100501742 + ... + 100501745.

It is an arithmetic number, because the mean of its divisors is an integer number (150752616).

Almost surely, 2^402006974 is an apocalyptic number.

402006974 is a deficient number, since it is larger than the sum of its proper divisors (201003490).

402006974 is a wasteful number, since it uses less digits than its factorization.

402006974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201003489.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 402006974 is about 20050.1115707619. Note that the first 3 decimals coincide. The cubic root of 402006974 is about 738.0365370434.

It can be divided in two parts, 40200 and 6974, that added together give a palindrome (47174).

The spelling of 402006974 in words is "four hundred two million, six thousand, nine hundred seventy-four".