99951407 has 2 divisors, whose sum is σ = 99951408. Its totient is φ = 99951406.

The previous prime is 99951391. The next prime is 99951421. The reversal of 99951407 is 70415999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99951407 - 2⁴ = 99951391 is a prime.

It is a super-2 number, since 2×99951407² = 19980567522559298, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99951427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49975703 + 49975704.

It is an arithmetic number, because the mean of its divisors is an integer number (49975704).

Almost surely, 2^99951407 is an apocalyptic number.

99951407 is a deficient number, since it is larger than the sum of its proper divisors (1).

99951407 is an equidigital number, since it uses as much as digits as its factorization.

99951407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 99951407 is about 9997.5700547683. The cubic root of 99951407 is about 464.0836882714.

The spelling of 99951407 in words is "ninety-nine million, nine hundred fifty-one thousand, four hundred seven".