60400399 has 2 divisors, whose sum is σ = 60400400. Its totient is φ = 60400398.

The previous prime is 60400381. The next prime is 60400409. The reversal of 60400399 is 99300406.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 60400399 - 2⁵ = 60400367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 60400399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60400349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30200199 + 30200200.

It is an arithmetic number, because the mean of its divisors is an integer number (30200200).

Almost surely, 2^60400399 is an apocalyptic number.

60400399 is a deficient number, since it is larger than the sum of its proper divisors (1).

60400399 is an equidigital number, since it uses as much as digits as its factorization.

60400399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 60400399 is about 7771.7693609628. The cubic root of 60400399 is about 392.3556725226.

The spelling of 60400399 in words is "sixty million, four hundred thousand, three hundred ninety-nine".