401407306 has 4 divisors (see below), whose sum is σ = 602110962. Its totient is φ = 200703652.

The previous prime is 401407297. The next prime is 401407327. The reversal of 401407306 is 603704104.

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., 390418081 + 10989225 = 19759^2 + 3315^2 .

It is a super-2 number, since 2×401407306² = 322255650620355272, which contains 22 as substring.

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, 100351825 + ... + 100351828.

Almost surely, 2^401407306 is an apocalyptic number.

401407306 is a deficient number, since it is larger than the sum of its proper divisors (200703656).

401407306 is a wasteful number, since it uses less digits than its factorization.

401407306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200703655.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 401407306 is about 20035.1517588463. The cubic root of 401407306 is about 737.6693816065.

The spelling of 401407306 in words is "four hundred one million, four hundred seven thousand, three hundred six".