402227477 has 4 divisors (see below), whose sum is σ = 416097420. Its totient is φ = 388357536.

The previous prime is 402227393. The next prime is 402227521. The reversal of 402227477 is 774722204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 328370641 + 73856836 = 18121^2 + 8594^2 .

It is a cyclic number.

It is not a de Polignac number, because 402227477 - 2²² = 398033173 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 (402227377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6934928 + ... + 6934985.

It is an arithmetic number, because the mean of its divisors is an integer number (104024355).

Almost surely, 2^402227477 is an apocalyptic number.

It is an amenable number.

402227477 is a deficient number, since it is larger than the sum of its proper divisors (13869943).

402227477 is a wasteful number, since it uses less digits than its factorization.

402227477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13869942.

The product of its (nonzero) digits is 43904, while the sum is 35.

The square root of 402227477 is about 20055.6096142700. The cubic root of 402227477 is about 738.1714513904.

The spelling of 402227477 in words is "four hundred two million, two hundred twenty-seven thousand, four hundred seventy-seven".