400262047 has 4 divisors (see below), whose sum is σ = 401750280. Its totient is φ = 398773816.

The previous prime is 400262029. The next prime is 400262117. The reversal of 400262047 is 740262004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400262047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400262747) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 743713 + ... + 744250.

It is an arithmetic number, because the mean of its divisors is an integer number (100437570).

Almost surely, 2^400262047 is an apocalyptic number.

400262047 is a deficient number, since it is larger than the sum of its proper divisors (1488233).

400262047 is a wasteful number, since it uses less digits than its factorization.

400262047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488232.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 400262047 is about 20006.5501024040. The cubic root of 400262047 is about 736.9671628388.

It can be divided in two parts, 4002 and 62047, that added together give a square (66049 = 257²).

The spelling of 400262047 in words is "four hundred million, two hundred sixty-two thousand, forty-seven".