402379801 has 2 divisors, whose sum is σ = 402379802. Its totient is φ = 402379800.

The previous prime is 402379799. The next prime is 402379883. The reversal of 402379801 is 108973204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320947225 + 81432576 = 17915^2 + 9024^2 .

It is a cyclic number.

It is not a de Polignac number, because 402379801 - 2¹ = 402379799 is a prime.

Together with 402379799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (402379301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201189900 + 201189901.

It is an arithmetic number, because the mean of its divisors is an integer number (201189901).

Almost surely, 2^402379801 is an apocalyptic number.

It is an amenable number.

402379801 is a deficient number, since it is larger than the sum of its proper divisors (1).

402379801 is an equidigital number, since it uses as much as digits as its factorization.

402379801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 402379801 is about 20059.4067958153. The cubic root of 402379801 is about 738.2646217510.

The spelling of 402379801 in words is "four hundred two million, three hundred seventy-nine thousand, eight hundred one".