397626029 has 2 divisors, whose sum is σ = 397626030. Its totient is φ = 397626028.

The previous prime is 397625983. The next prime is 397626059. The reversal of 397626029 is 920626793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316662025 + 80964004 = 17795^2 + 8998^2 .

It is a cyclic number.

It is not a de Polignac number, because 397626029 - 2¹² = 397621933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397626059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198813014 + 198813015.

It is an arithmetic number, because the mean of its divisors is an integer number (198813015).

Almost surely, 2^397626029 is an apocalyptic number.

It is an amenable number.

397626029 is a deficient number, since it is larger than the sum of its proper divisors (1).

397626029 is an equidigital number, since it uses as much as digits as its factorization.

397626029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 397626029 is about 19940.5624043055. The cubic root of 397626029 is about 735.3457758815.

The spelling of 397626029 in words is "three hundred ninety-seven million, six hundred twenty-six thousand, twenty-nine".