394610462690 has 16 divisors (see below), whose sum is σ = 710310694392. Its totient is φ = 157841549184.

The previous prime is 394610462681. The next prime is 394610462707. The reversal of 394610462690 is 96264016493.

It can be written as a sum of positive squares in 4 ways, for example, as 100437652561 + 294172810129 = 316919^2 + 542377^2 .

It is a super-2 number, since 2×394610462690² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369992 + ... + 962348.

Almost surely, 2^394610462690 is an apocalyptic number.

394610462690 is a deficient number, since it is larger than the sum of its proper divisors (315700231702).

394610462690 is a wasteful number, since it uses less digits than its factorization.

394610462690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658981.

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 394610462690 in words is "three hundred ninety-four billion, six hundred ten million, four hundred sixty-two thousand, six hundred ninety".