399704784270 has 32 divisors (see below), whose sum is σ = 1046499799680. Its totient is φ = 96898129440.

The previous prime is 399704784247. The next prime is 399704784293. The reversal of 399704784270 is 72487407993.

It is an interprime number because it is at equal distance from previous prime (399704784247) and next prime (399704784293).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605612980 + ... + 605613639.

It is an arithmetic number, because the mean of its divisors is an integer number (32703118740).

Almost surely, 2^399704784270 is an apocalyptic number.

399704784270 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

399704784270 is an abundant number, since it is smaller than the sum of its proper divisors (646795015410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399704784270 is a wasteful number, since it uses less digits than its factorization.

399704784270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211226640.

The product of its (nonzero) digits is 21337344, while the sum is 60.

The spelling of 399704784270 in words is "three hundred ninety-nine billion, seven hundred four million, seven hundred eighty-four thousand, two hundred seventy".