378472929 has 4 divisors (see below), whose sum is σ = 504630576. Its totient is φ = 252315284.

The previous prime is 378472903. The next prime is 378472931. The reversal of 378472929 is 929274873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 929274873 = 3 ⋅309758291.

It is a cyclic number.

It is not a de Polignac number, because 378472929 - 2¹² = 378468833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378472949) 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, 63078819 + ... + 63078824.

It is an arithmetic number, because the mean of its divisors is an integer number (126157644).

Almost surely, 2^378472929 is an apocalyptic number.

It is an amenable number.

378472929 is a deficient number, since it is larger than the sum of its proper divisors (126157647).

378472929 is a wasteful number, since it uses less digits than its factorization.

378472929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126157646.

The product of its digits is 1524096, while the sum is 51.

The square root of 378472929 is about 19454.3807148930. The cubic root of 378472929 is about 723.3440948987.

The spelling of 378472929 in words is "three hundred seventy-eight million, four hundred seventy-two thousand, nine hundred twenty-nine".