402074549 has 6 divisors (see below), whose sum is σ = 403274166. Its totient is φ = 400878440.

The previous prime is 402074539. The next prime is 402074551. The reversal of 402074549 is 945470204.

It can be written as a sum of positive squares in only one way, i.e., 310393924 + 91680625 = 17618^2 + 9575^2 .

It is a de Polignac number, because none of the positive numbers 2^k-402074549 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 (402074539) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145319 + ... + 148059.

It is an arithmetic number, because the mean of its divisors is an integer number (67212361).

Almost surely, 2^402074549 is an apocalyptic number.

It is an amenable number.

402074549 is a deficient number, since it is larger than the sum of its proper divisors (1199617).

402074549 is an frugal number, since it uses more digits than its factorization.

402074549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507 (or 3124 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 402074549 is about 20051.7966526693. The cubic root of 402074549 is about 738.0778879220.

The spelling of 402074549 in words is "four hundred two million, seventy-four thousand, five hundred forty-nine".