402948404 has 6 divisors (see below), whose sum is σ = 705159714. Its totient is φ = 201474200.

The previous prime is 402948401. The next prime is 402948407. The reversal of 402948404 is 404849204.

It is an interprime number because it is at equal distance from previous prime (402948401) and next prime (402948407).

It can be written as a sum of positive squares in only one way, i.e., 363283600 + 39664804 = 19060^2 + 6298^2 .

It is a super-2 number, since 2×402948404² = 324734832572294432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402948401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50368547 + ... + 50368554.

It is an arithmetic number, because the mean of its divisors is an integer number (117526619).

Almost surely, 2^402948404 is an apocalyptic number.

It is an amenable number.

402948404 is a deficient number, since it is larger than the sum of its proper divisors (302211310).

402948404 is a wasteful number, since it uses less digits than its factorization.

402948404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100737105 (or 100737103 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 402948404 is about 20073.5747688348. The cubic root of 402948404 is about 738.6122053876.

The spelling of 402948404 in words is "four hundred two million, nine hundred forty-eight thousand, four hundred four".