402054077 has 4 divisors (see below), whose sum is σ = 411860316. Its totient is φ = 392247840.

The previous prime is 402054073. The next prime is 402054083. The reversal of 402054077 is 770450204.

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 153487321 + 248566756 = 12389^2 + 15766^2 .

It is a cyclic number.

It is not a de Polignac number, because 402054077 - 2² = 402054073 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 (402054071) 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, 4903058 + ... + 4903139.

It is an arithmetic number, because the mean of its divisors is an integer number (102965079).

Almost surely, 2^402054077 is an apocalyptic number.

It is an amenable number.

402054077 is a deficient number, since it is larger than the sum of its proper divisors (9806239).

402054077 is an equidigital number, since it uses as much as digits as its factorization.

402054077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9806238.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 402054077 is about 20051.2861682237. The cubic root of 402054077 is about 738.0653610685.

The spelling of 402054077 in words is "four hundred two million, fifty-four thousand, seventy-seven".