393107390 has 16 divisors (see below), whose sum is σ = 762023808. Its totient is φ = 145147296.

The previous prime is 393107387. The next prime is 393107399. The reversal of 393107390 is 93701393.

It is a happy number.

It is a super-2 number, since 2×393107390² = 309066840145224200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 393107390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393107399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1511822 + ... + 1512081.

It is an arithmetic number, because the mean of its divisors is an integer number (47626488).

Almost surely, 2^393107390 is an apocalyptic number.

393107390 is a deficient number, since it is larger than the sum of its proper divisors (368916418).

393107390 is a wasteful number, since it uses less digits than its factorization.

393107390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023923.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 393107390 is about 19826.9359710471. The cubic root of 393107390 is about 732.5496570839.

The spelling of 393107390 in words is "three hundred ninety-three million, one hundred seven thousand, three hundred ninety".