399704227532 has 12 divisors (see below), whose sum is σ = 702536908080. Its totient is φ = 198979396656.

The previous prime is 399704227523. The next prime is 399704227541. The reversal of 399704227532 is 235722407993.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (399704227523) and next prime (399704227541).

It is a super-2 number, since 2×399704227532² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218178248 + ... + 218180079.

It is an arithmetic number, because the mean of its divisors is an integer number (58544742340).

Almost surely, 2^399704227532 is an apocalyptic number.

It is an amenable number.

399704227532 is a deficient number, since it is larger than the sum of its proper divisors (302832680548).

399704227532 is a wasteful number, since it uses less digits than its factorization.

399704227532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436358560 (or 436358558 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 53.

The spelling of 399704227532 in words is "three hundred ninety-nine billion, seven hundred four million, two hundred twenty-seven thousand, five hundred thirty-two".