395740438 has 32 divisors (see below), whose sum is σ = 655776000. Its totient is φ = 178465056.

The previous prime is 395740427. The next prime is 395740447. The reversal of 395740438 is 834047593.

It is a super-2 number, since 2×395740438² = 313220988536863688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 395740394 and 395740403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53913 + ... + 60811.

It is an arithmetic number, because the mean of its divisors is an integer number (20493000).

Almost surely, 2^395740438 is an apocalyptic number.

395740438 is a deficient number, since it is larger than the sum of its proper divisors (260035562).

395740438 is a wasteful number, since it uses less digits than its factorization.

395740438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6996.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 395740438 is about 19893.2259324625. The cubic root of 395740438 is about 734.1815672904.

The spelling of 395740438 in words is "three hundred ninety-five million, seven hundred forty thousand, four hundred thirty-eight".