712921398 has 32 divisors (see below), whose sum is σ = 1630325760. Its totient is φ = 203592960.

The previous prime is 712921397. The next prime is 712921399. The reversal of 712921398 is 893129217.

It is an interprime number because it is at equal distance from previous prime (712921397) and next prime (712921399).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712921397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170598 + ... + 174726.

It is an arithmetic number, because the mean of its divisors is an integer number (50947680).

Almost surely, 2^712921398 is an apocalyptic number.

712921398 is an abundant number, since it is smaller than the sum of its proper divisors (917404362).

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

712921398 is a wasteful number, since it uses less digits than its factorization.

712921398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8252.

The product of its digits is 54432, while the sum is 42.

The square root of 712921398 is about 26700.5879710541. The cubic root of 712921398 is about 893.3340410195.

The spelling of 712921398 in words is "seven hundred twelve million, nine hundred twenty-one thousand, three hundred ninety-eight".