378207401 has 12 divisors (see below), whose sum is σ = 447695556. Its totient is φ = 317375520.

The previous prime is 378207373. The next prime is 378207419. The reversal of 378207401 is 104702873.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20241001 + 357966400 = 4499^2 + 18920^2 .

It is not a de Polignac number, because 378207401 - 2⁶ = 378207337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (378207481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118646 + ... + 121791.

It is an arithmetic number, because the mean of its divisors is an integer number (37307963).

Almost surely, 2^378207401 is an apocalyptic number.

It is an amenable number.

378207401 is a deficient number, since it is larger than the sum of its proper divisors (69488155).

378207401 is a wasteful number, since it uses less digits than its factorization.

378207401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240472 (or 240461 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 378207401 is about 19447.5551419709. Note that the first 3 decimals coincide. The cubic root of 378207401 is about 723.1748947344.

The spelling of 378207401 in words is "three hundred seventy-eight million, two hundred seven thousand, four hundred one".