402774147 has 8 divisors (see below), whose sum is σ = 596702480. Its totient is φ = 268516080.

The previous prime is 402774143. The next prime is 402774173. The reversal of 402774147 is 741477204.

It is not a de Polignac number, because 402774147 - 2² = 402774143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402774143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7458754 + ... + 7458807.

It is an arithmetic number, because the mean of its divisors is an integer number (74587810).

Almost surely, 2^402774147 is an apocalyptic number.

402774147 is a deficient number, since it is larger than the sum of its proper divisors (193928333).

402774147 is a wasteful number, since it uses less digits than its factorization.

402774147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14917570 (or 14917564 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 36.

The square root of 402774147 is about 20069.2338418785. The cubic root of 402774147 is about 738.5057178872.

The spelling of 402774147 in words is "four hundred two million, seven hundred seventy-four thousand, one hundred forty-seven".